January 2014 - mpiwg-fortran - mailman3.cels.anl.gov

Re: [MPIWG Fortran] Draft chapter for discussion today
by Rolf Rabenseifner 17 Jan '14

17 Jan '14

Dear Jeff, the content is okay, but I have a few issues with a missing completeness of the ticket: - MPI-3.0, in Table 2.1, after p18:34 add: mpif.h (5) [deprecated since] MPI-4.0 [Replacement] mpi or mpi_f08 module and after p18:37: (5) Include file. - The whole text of section 17.1.4 must be moved into the new 15.3 Deprecated since MPI-4.0 15.3.1 Fortran Support through the mpif.h Include File With MPI-4.0, the Section 17.1.4 on page ... was deprecated and moved into this Section 15.3.1. [Old text from 17.1.4 with the proposed modifications.] The use of the mpif.h include file is deprecated and may be deleted from a future Version of MPI. ... 17.1.4 Fortran Support through the mpif.h Include File Since MPI-4.0, the use of the mpif.h include file is deprecated and the content of this section was moved into Section 15.3.1 on page ... . - MPI-3.0 p11:17 reads > The Fortran version of the same function used > with USE mpi or INCLUDE 'mpif.h'. but should read And additionally for routines that existed already in MPI-3.0: > The Fortran version of the same function used > with USE mpi or the deprecated > INCLUDE 'mpif.h'. - MPI-3.0 p12:40, p30:19 reads INCLUDE 'mpif.h' but should read the deprecated INCLUDE 'mpif.h' - MPI-3.0 p13:21 reads mpif.h or the mpi module but should read the mpi module or the deprecated mpif.h - MPI-3.0 p16:19 reads the include file mpif.h or the mpi module but should read the mpi module or the deprecated include file mpif.h - MPI-3.0 p19:19 reads mpif.h and use mpi but should read use mpi and the deprecated mpif.h - MPI-3.0 p32:18 reads > mpi.h and mpif.h but should read mpi.h, the Fortran modules mpi_f08 and mpi, and in the deprecated mpif.h - MPI-3.0 p45:36, p268:38, p270:10, p270:21, p274:14, p277:26, p339:45, p344:26, p346:16, p347:40, p407:48, p409:31, p411:12, p475:15, p475:47, p476:42, 680:36, p680:37 reads mpif.h but should read the deprecated mpif.h - MPI-3.0 p367:16, p379:48 reads the include file mpif.h but should read the deprecated include file mpif.h - MPI-3.0 p545:14 reads the mpif.h but should read the deprecated mpif.h - MPI-3.0 p605-659 (Fortran Chapter, starting with 17.1.5) reads mpif.h but should read the deprecated mpif.h - MPI-3.0 p756:1 reads Fortran Bindings with mpif.h or the mpi Module but should read (would be too Long with "deprecated") Fortran Bindings with the mpi Module or mpif.h I do not expect that I found all issues, but at least some ;-) Best regards Rolf ----- Original Message ----- > From: "Jeff Squyres (jsquyres)" <jsquyres(a)cisco.com> > To: "MPI-WG Fortran working group" <mpiwg-fortran(a)lists.mpi-forum.org> > Sent: Thursday, January 16, 2014 8:13:06 PM > Subject: Re: [MPIWG Fortran] Draft chapter for discussion today > > We tweaked the document a bit more on the call; here's the final > result. > > > On Jan 16, 2014, at 11:18 AM, "Jeff Squyres (jsquyres)" > <jsquyres(a)cisco.com> > wrote: > > > Sure -- we're starting in about 40 minutes (noon, US Eastern time). > > > > Here's the content from the invite: > > > > The main point of this meeting is to discuss 2 MPI-4 proposals that > > Jeff will have ready: > > > > 1. Deprecate mpif.h. Rolf's suggestion: > > > > MPI-3 p603, chap 17.1.4 > > 1st para -- "mpif.h is strongly discouraged and may be > > deprecated..." > > --> change to "is deprecated and may be deleted..." > > --> Add (short) AtoU, if you have software using mpif.h, you > >should > > change it thusly... (see page 603 line 15-17 for > > inspiration/copy) > > > > 2. Freeze the mpi module (no new features). The intent is to focus > > all of our energies on the mpi_f08 module in the future. If there > > is push back on this from the Forum, our plan B for this is to > > modernize the mpi module (i.e., add all the features to the mpi > > module that we added to the mpi_f08 module). Rolf's suggestions: > > > > --> Add AtoU encourage users to move to mpi_f08 > > > > -------- > > > > **** You can forward this email invitation to attendees **** > > > > Hello , > > > > Jeff Squyres invites you to attend this online meeting. > > > > Topic: MPI Forum Fortran WG > > Date: Thursday, January 16, 2014 > > Time: 12:00 pm, Eastern Standard Time (New York, GMT-05:00) > > Meeting Number: 203 787 876 > > Meeting Password: mpi > > > > > > ------------------------------------------------------- > > To join the online meeting (Now from mobile devices!) > > ------------------------------------------------------- > > 1. Go to > > https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&PW=NY2UzZmNiNWY… > > 2. Enter your name and email address. > > 3. Enter the meeting password: mpi > > 4. Click "Join Now". > > > > To view in other time zones or languages, please click the link: > > https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&PW=NY2UzZmNiNWY… > > > > ---------------------------------------------------------------- > > ALERT – PLEASE READ: DO NOT DIAL THE TOLL FREE NUMBERS FROM WITHIN > > THE (408) OR (919) AREA CODES > > ---------------------------------------------------------------- > > Please dial the local access number for your area from the list > > below: > > - San Jose/Milpitas (408) area: 525-6800 > > - RTP (919) area: 392-3330 > > > > Dialing the WebEx toll free numbers from within 408 or 919 area > > codes is not enabled (non-Cisco phones). “ If you dial the > > toll-free numbers within the 408 or 919 area codes you will be > > instructed to hang up and dial the local access number.” Please > > use the call-back option whenever possible and otherwise dial > > local numbers only. The affected toll free numbers are: (866) > > 432-9903 for the San Jose/Milpitas area and (866) 349-3520 for the > > RTP area. > > > > ------------------------------------------------------- > > To join the teleconference only > > ------------------------------------------------------- > > 1. Dial into Cisco WebEx (view all Global Access Numbers at > > http://cisco.com/en/US/about/doing_business/conferencing/index.html > > 2. Follow the prompts to enter the Meeting Number (listed above) or > > Access Code followed by the # sign. > > > > San Jose, CA: +1.408.525.6800 RTP: +1.919.392.3330 > > > > US/Canada: +1.866.432.9903 United Kingdom: +44.20.8824.0117 > > > > India: +91.80.4350.1111 Germany: +49.619.6773.9002 > > > > Japan: +81.3.5763.9394 China: +86.10.8515.5666 > > > > ------------------------------------------------------- > > For assistance > > ------------------------------------------------------- > > 1. Go to https://cisco.webex.com/ciscosales/mc > > 2. On the left navigation bar, click "Support". > > > > You can contact me at: > > jsquyres(a)cisco.com > > 1-408-525 0971 > > > > To add this meeting to your calendar program (for example Microsoft > > Outlook), click this link: > > https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&ICS=MI&LD=1&RD=… > > > > The playback of UCF (Universal Communications Format) rich media > > files requires appropriate players. To view this type of rich > > media files in the meeting, please check whether you have the > > players installed on your computer by going to > > https://cisco.webex.com/ciscosales/systemdiagnosis.php . > > > > > > > > > > http://www.webex.com > > > > CCP:+14085256800x203787876# > > > > IMPORTANT NOTICE: This WebEx service includes a feature that allows > > audio and any documents and other materials exchanged or viewed > > during the session to be recorded. By joining this session, you > > automatically consent to such recordings. If you do not consent to > > the recording, discuss your concerns with the meeting host prior > > to the start of the recording or do not join the session. Please > > note that any such recordings may be subject to discovery in the > > event of litigation. > > > > > > > > > > > > > > On Jan 16, 2014, at 11:01 AM, Bill Long <longb(a)cray.com> > > wrote: > > > >> Hi Jeff, > >> > >> Just starting another meeting. Hopefully I’ll be out in time. > >> Before them, could you resend the webex link - I got a new > >> computer at work with software that seems to delete the email > >> message if you “accept” a meeting. > >> > >> Cheers, > >> Bill > >> > >> > >> On Jan 16, 2014, at 9:03 AM, Jeff Squyres (jsquyres) > >> <jsquyres(a)cisco.com> wrote: > >> > >>> Here is a first cut of the language bindings chapter with changes > >>> to: > >>> > >>> 1. deprecate mpif.h > >>> 2. freeze the mpi module > >>> > >>> Look for "ticketWG" to see the changes -- I used the standard MPI > >>> update/replace macros, so all the changes are easily located. > >>> We'll talk through this text on the webex today. The intent is > >>> to introduce a ticket (or two?) at the next meeting for 1. and > >>> 2. > >>> > >>> Note that this PDF does *NOT* reflect the recently-passed tickets > >>> for fixing the "linker name" language, etc. This PDF draft for > >>> discussion on the webex today is simply the MPI-3.0 text with my > >>> updates for 1. and 2. > >>> > >>> Updating the MPI-3.1 directory in SVN to include the text from > >>> the recent tickets will be a separate effort. > >>> > >>> -- > >>> Jeff Squyres > >>> jsquyres(a)cisco.com > >>> For corporate legal information go to: > >>> http://www.cisco.com/web/about/doing_business/legal/cri/ > >>> <binding-2.pdf>_______________________________________________ > >>> mpiwg-fortran mailing list > >>> mpiwg-fortran(a)lists.mpi-forum.org > >>> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran > >> > >> Bill > >> Long > >> longb(a)cray.com > >> Fortran Technical Suport & > >> voice: 651-605-9024 > >> Bioinformatics Software Development fax: > >> 651-605-9142 > >> Cray Inc./ Cray Plaza, Suite 210/ 380 Jackson St./ St. Paul, MN > >> 55101 > >> > >> > >> _______________________________________________ > >> mpiwg-fortran mailing list > >> mpiwg-fortran(a)lists.mpi-forum.org > >> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran > > > > > > -- > > Jeff Squyres > > jsquyres(a)cisco.com > > For corporate legal information go to: > > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > > _______________________________________________ > > mpiwg-fortran mailing list > > mpiwg-fortran(a)lists.mpi-forum.org > > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran > > > -- > Jeff Squyres > jsquyres(a)cisco.com > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > _______________________________________________ > mpiwg-fortran mailing list > mpiwg-fortran(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran -- Dr. Rolf Rabenseifner . . . . . . . . . .. email rabenseifner(a)hlrs.de High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530 University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832 Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner Nobelstr. 19, D-70550 Stuttgart, Germany . . . . (Office: Room 1.307)

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Re: [MPIWG Fortran] Draft chapter for discussion today
by Jeff Squyres (jsquyres) 16 Jan '14

16 Jan '14

We tweaked the document a bit more on the call; here's the final result. On Jan 16, 2014, at 11:18 AM, "Jeff Squyres (jsquyres)" <jsquyres(a)cisco.com> wrote: > Sure -- we're starting in about 40 minutes (noon, US Eastern time). > > Here's the content from the invite: > > The main point of this meeting is to discuss 2 MPI-4 proposals that Jeff will have ready: > > 1. Deprecate mpif.h. Rolf's suggestion: > > MPI-3 p603, chap 17.1.4 > 1st para -- "mpif.h is strongly discouraged and may be deprecated..." > --> change to "is deprecated and may be deleted..." > --> Add (short) AtoU, if you have software using mpif.h, you should > change it thusly... (see page 603 line 15-17 for > inspiration/copy) > > 2. Freeze the mpi module (no new features). The intent is to focus all of our energies on the mpi_f08 module in the future. If there is push back on this from the Forum, our plan B for this is to modernize the mpi module (i.e., add all the features to the mpi module that we added to the mpi_f08 module). Rolf's suggestions: > > --> Add AtoU encourage users to move to mpi_f08 > > -------- > > **** You can forward this email invitation to attendees **** > > Hello , > > Jeff Squyres invites you to attend this online meeting. > > Topic: MPI Forum Fortran WG > Date: Thursday, January 16, 2014 > Time: 12:00 pm, Eastern Standard Time (New York, GMT-05:00) > Meeting Number: 203 787 876 > Meeting Password: mpi > > > ------------------------------------------------------- > To join the online meeting (Now from mobile devices!) > ------------------------------------------------------- > 1. Go to https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&PW=NY2UzZmNiNWY… > 2. Enter your name and email address. > 3. Enter the meeting password: mpi > 4. Click "Join Now". > > To view in other time zones or languages, please click the link: > https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&PW=NY2UzZmNiNWY… > > ---------------------------------------------------------------- > ALERT – PLEASE READ: DO NOT DIAL THE TOLL FREE NUMBERS FROM WITHIN THE (408) OR (919) AREA CODES > ---------------------------------------------------------------- > Please dial the local access number for your area from the list below: > - San Jose/Milpitas (408) area: 525-6800 > - RTP (919) area: 392-3330 > > Dialing the WebEx toll free numbers from within 408 or 919 area codes is not enabled (non-Cisco phones). “ If you dial the toll-free numbers within the 408 or 919 area codes you will be instructed to hang up and dial the local access number.” Please use the call-back option whenever possible and otherwise dial local numbers only. The affected toll free numbers are: (866) 432-9903 for the San Jose/Milpitas area and (866) 349-3520 for the RTP area. > > ------------------------------------------------------- > To join the teleconference only > ------------------------------------------------------- > 1. Dial into Cisco WebEx (view all Global Access Numbers at > http://cisco.com/en/US/about/doing_business/conferencing/index.html > 2. Follow the prompts to enter the Meeting Number (listed above) or Access Code followed by the # sign. > > San Jose, CA: +1.408.525.6800 RTP: +1.919.392.3330 > > US/Canada: +1.866.432.9903 United Kingdom: +44.20.8824.0117 > > India: +91.80.4350.1111 Germany: +49.619.6773.9002 > > Japan: +81.3.5763.9394 China: +86.10.8515.5666 > > ------------------------------------------------------- > For assistance > ------------------------------------------------------- > 1. Go to https://cisco.webex.com/ciscosales/mc > 2. On the left navigation bar, click "Support". > > You can contact me at: > jsquyres(a)cisco.com > 1-408-525 0971 > > To add this meeting to your calendar program (for example Microsoft Outlook), click this link: > https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&ICS=MI&LD=1&RD=… > > The playback of UCF (Universal Communications Format) rich media files requires appropriate players. To view this type of rich media files in the meeting, please check whether you have the players installed on your computer by going to https://cisco.webex.com/ciscosales/systemdiagnosis.php. > > > > > http://www.webex.com > > CCP:+14085256800x203787876# > > IMPORTANT NOTICE: This WebEx service includes a feature that allows audio and any documents and other materials exchanged or viewed during the session to be recorded. By joining this session, you automatically consent to such recordings. If you do not consent to the recording, discuss your concerns with the meeting host prior to the start of the recording or do not join the session. Please note that any such recordings may be subject to discovery in the event of litigation. > > > > > > > On Jan 16, 2014, at 11:01 AM, Bill Long <longb(a)cray.com> > wrote: > >> Hi Jeff, >> >> Just starting another meeting. Hopefully I’ll be out in time. Before them, could you resend the webex link - I got a new computer at work with software that seems to delete the email message if you “accept” a meeting. >> >> Cheers, >> Bill >> >> >> On Jan 16, 2014, at 9:03 AM, Jeff Squyres (jsquyres) <jsquyres(a)cisco.com> wrote: >> >>> Here is a first cut of the language bindings chapter with changes to: >>> >>> 1. deprecate mpif.h >>> 2. freeze the mpi module >>> >>> Look for "ticketWG" to see the changes -- I used the standard MPI update/replace macros, so all the changes are easily located. We'll talk through this text on the webex today. The intent is to introduce a ticket (or two?) at the next meeting for 1. and 2. >>> >>> Note that this PDF does *NOT* reflect the recently-passed tickets for fixing the "linker name" language, etc. This PDF draft for discussion on the webex today is simply the MPI-3.0 text with my updates for 1. and 2. >>> >>> Updating the MPI-3.1 directory in SVN to include the text from the recent tickets will be a separate effort. >>> >>> -- >>> Jeff Squyres >>> jsquyres(a)cisco.com >>> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/ >>> <binding-2.pdf>_______________________________________________ >>> mpiwg-fortran mailing list >>> mpiwg-fortran(a)lists.mpi-forum.org >>> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran >> >> Bill Long longb(a)cray.com >> Fortran Technical Suport & voice: 651-605-9024 >> Bioinformatics Software Development fax: 651-605-9142 >> Cray Inc./ Cray Plaza, Suite 210/ 380 Jackson St./ St. Paul, MN 55101 >> >> >> _______________________________________________ >> mpiwg-fortran mailing list >> mpiwg-fortran(a)lists.mpi-forum.org >> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran > > > -- > Jeff Squyres > jsquyres(a)cisco.com > For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/ > > _______________________________________________ > mpiwg-fortran mailing list > mpiwg-fortran(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran -- Jeff Squyres jsquyres(a)cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

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Re: [MPIWG Fortran] Draft chapter for discussion today
by Jeff Squyres (jsquyres) 16 Jan '14

16 Jan '14

Sure -- we're starting in about 40 minutes (noon, US Eastern time). Here's the content from the invite: The main point of this meeting is to discuss 2 MPI-4 proposals that Jeff will have ready: 1. Deprecate mpif.h. Rolf's suggestion: MPI-3 p603, chap 17.1.4 1st para -- "mpif.h is strongly discouraged and may be deprecated..." --> change to "is deprecated and may be deleted..." --> Add (short) AtoU, if you have software using mpif.h, you should change it thusly... (see page 603 line 15-17 for inspiration/copy) 2. Freeze the mpi module (no new features). The intent is to focus all of our energies on the mpi_f08 module in the future. If there is push back on this from the Forum, our plan B for this is to modernize the mpi module (i.e., add all the features to the mpi module that we added to the mpi_f08 module). Rolf's suggestions: --> Add AtoU encourage users to move to mpi_f08 -------- **** You can forward this email invitation to attendees **** Hello , Jeff Squyres invites you to attend this online meeting. Topic: MPI Forum Fortran WG Date: Thursday, January 16, 2014 Time: 12:00 pm, Eastern Standard Time (New York, GMT-05:00) Meeting Number: 203 787 876 Meeting Password: mpi ------------------------------------------------------- To join the online meeting (Now from mobile devices!) ------------------------------------------------------- 1. Go to https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&PW=NY2UzZmNiNWY… 2. Enter your name and email address. 3. Enter the meeting password: mpi 4. Click "Join Now". To view in other time zones or languages, please click the link: https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&PW=NY2UzZmNiNWY… ---------------------------------------------------------------- ALERT – PLEASE READ: DO NOT DIAL THE TOLL FREE NUMBERS FROM WITHIN THE (408) OR (919) AREA CODES ---------------------------------------------------------------- Please dial the local access number for your area from the list below: - San Jose/Milpitas (408) area: 525-6800 - RTP (919) area: 392-3330 Dialing the WebEx toll free numbers from within 408 or 919 area codes is not enabled (non-Cisco phones). “ If you dial the toll-free numbers within the 408 or 919 area codes you will be instructed to hang up and dial the local access number.” Please use the call-back option whenever possible and otherwise dial local numbers only. The affected toll free numbers are: (866) 432-9903 for the San Jose/Milpitas area and (866) 349-3520 for the RTP area. ------------------------------------------------------- To join the teleconference only ------------------------------------------------------- 1. Dial into Cisco WebEx (view all Global Access Numbers at http://cisco.com/en/US/about/doing_business/conferencing/index.html 2. Follow the prompts to enter the Meeting Number (listed above) or Access Code followed by the # sign. San Jose, CA: +1.408.525.6800 RTP: +1.919.392.3330 US/Canada: +1.866.432.9903 United Kingdom: +44.20.8824.0117 India: +91.80.4350.1111 Germany: +49.619.6773.9002 Japan: +81.3.5763.9394 China: +86.10.8515.5666 ------------------------------------------------------- For assistance ------------------------------------------------------- 1. Go to https://cisco.webex.com/ciscosales/mc 2. On the left navigation bar, click "Support". You can contact me at: jsquyres(a)cisco.com 1-408-525 0971 To add this meeting to your calendar program (for example Microsoft Outlook), click this link: https://cisco.webex.com/ciscosales/j.php?ED=248676957&UID=0&ICS=MI&LD=1&RD=… The playback of UCF (Universal Communications Format) rich media files requires appropriate players. To view this type of rich media files in the meeting, please check whether you have the players installed on your computer by going to https://cisco.webex.com/ciscosales/systemdiagnosis.php. http://www.webex.com CCP:+14085256800x203787876# IMPORTANT NOTICE: This WebEx service includes a feature that allows audio and any documents and other materials exchanged or viewed during the session to be recorded. By joining this session, you automatically consent to such recordings. If you do not consent to the recording, discuss your concerns with the meeting host prior to the start of the recording or do not join the session. Please note that any such recordings may be subject to discovery in the event of litigation. On Jan 16, 2014, at 11:01 AM, Bill Long <longb(a)cray.com> wrote: > Hi Jeff, > > Just starting another meeting. Hopefully I’ll be out in time. Before them, could you resend the webex link - I got a new computer at work with software that seems to delete the email message if you “accept” a meeting. > > Cheers, > Bill > > > On Jan 16, 2014, at 9:03 AM, Jeff Squyres (jsquyres) <jsquyres(a)cisco.com> wrote: > >> Here is a first cut of the language bindings chapter with changes to: >> >> 1. deprecate mpif.h >> 2. freeze the mpi module >> >> Look for "ticketWG" to see the changes -- I used the standard MPI update/replace macros, so all the changes are easily located. We'll talk through this text on the webex today. The intent is to introduce a ticket (or two?) at the next meeting for 1. and 2. >> >> Note that this PDF does *NOT* reflect the recently-passed tickets for fixing the "linker name" language, etc. This PDF draft for discussion on the webex today is simply the MPI-3.0 text with my updates for 1. and 2. >> >> Updating the MPI-3.1 directory in SVN to include the text from the recent tickets will be a separate effort. >> >> -- >> Jeff Squyres >> jsquyres(a)cisco.com >> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/ >> <binding-2.pdf>_______________________________________________ >> mpiwg-fortran mailing list >> mpiwg-fortran(a)lists.mpi-forum.org >> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran > > Bill Long longb(a)cray.com > Fortran Technical Suport & voice: 651-605-9024 > Bioinformatics Software Development fax: 651-605-9142 > Cray Inc./ Cray Plaza, Suite 210/ 380 Jackson St./ St. Paul, MN 55101 > > > _______________________________________________ > mpiwg-fortran mailing list > mpiwg-fortran(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran -- Jeff Squyres jsquyres(a)cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

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Re: [MPIWG Fortran] Draft chapter for discussion today
by Bill Long 16 Jan '14

16 Jan '14

Hi Jeff, Just starting another meeting. Hopefully I’ll be out in time. Before them, could you resend the webex link - I got a new computer at work with software that seems to delete the email message if you “accept” a meeting. Cheers, Bill On Jan 16, 2014, at 9:03 AM, Jeff Squyres (jsquyres) <jsquyres(a)cisco.com> wrote: > Here is a first cut of the language bindings chapter with changes to: > > 1. deprecate mpif.h > 2. freeze the mpi module > > Look for "ticketWG" to see the changes -- I used the standard MPI update/replace macros, so all the changes are easily located. We'll talk through this text on the webex today. The intent is to introduce a ticket (or two?) at the next meeting for 1. and 2. > > Note that this PDF does *NOT* reflect the recently-passed tickets for fixing the "linker name" language, etc. This PDF draft for discussion on the webex today is simply the MPI-3.0 text with my updates for 1. and 2. > > Updating the MPI-3.1 directory in SVN to include the text from the recent tickets will be a separate effort. > > -- > Jeff Squyres > jsquyres(a)cisco.com > For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/ > <binding-2.pdf>_______________________________________________ > mpiwg-fortran mailing list > mpiwg-fortran(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran Bill Long longb(a)cray.com Fortran Technical Suport & voice: 651-605-9024 Bioinformatics Software Development fax: 651-605-9142 Cray Inc./ Cray Plaza, Suite 210/ 380 Jackson St./ St. Paul, MN 55101

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Draft chapter for discussion today
by Jeff Squyres (jsquyres) 16 Jan '14

16 Jan '14

Here is a first cut of the language bindings chapter with changes to: 1. deprecate mpif.h 2. freeze the mpi module Look for "ticketWG" to see the changes -- I used the standard MPI update/replace macros, so all the changes are easily located. We'll talk through this text on the webex today. The intent is to introduce a ticket (or two?) at the next meeting for 1. and 2. Note that this PDF does *NOT* reflect the recently-passed tickets for fixing the "linker name" language, etc. This PDF draft for discussion on the webex today is simply the MPI-3.0 text with my updates for 1. and 2. Updating the MPI-3.1 directory in SVN to include the text from the recent tickets will be a separate effort. -- Jeff Squyres jsquyres(a)cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

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Re: [MPIWG Fortran] MPI-3 ticket 349: Fortran question
by Bill Long 02 Jan '14

02 Jan '14

On 1/2/14 10:36 AM, Dave Goodell (dgoodell) wrote: > On Dec 24, 2013, at 11:36 AM, Jim Dinan <james.dinan(a)gmail.com> wrote: > >> Given that MPI_Aint will be at least the same size as ptrdiff_t, do we >> actually have a problem with subtracting MPI_Aints to find pointer diffs? >> It seems like this may actually be ok. > > There's still a problem. I don't think that ptrdiff_t has anything to do with it since that normally only comes into play when you subtract two _pointers_, not two integers acting sort of like pointers. > > > The overflow occurs because "(a - b)" is really "(-9223372036854775808 - 9223372036854775804)" in signed integer arithmetic. Note that most implementations will give you the expected value if you don't set '-ftrapv', but that's *undefined behavior* according to the C standard and should not be relied upon (see http://www.airs.com/blog/archives/120) > > This is all just the C side of things. I have no idea whether Fortran integer overflow is defined. > Fortran rule: The execution of any numeric operation whose result is not defined by the arithmetic used by the processor is prohibited. Cheers, Bill > -Dave > > _______________________________________________ > mpiwg-fortran mailing list > mpiwg-fortran(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-fortran > -- Bill Long longb(a)cray.com Fortran Technical Support & voice: 651-605-9024 Bioinformatics Software Development fax: 651-605-9142 Cray Inc./Cray Plaza, Suite 210/380 Jackson St./St. Paul, MN 55101

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Re: [MPIWG Fortran] MPI-3 ticket 349: Fortran question
by Dave Goodell (dgoodell) 02 Jan '14

02 Jan '14

On Dec 24, 2013, at 11:36 AM, Jim Dinan <james.dinan(a)gmail.com> wrote: > Given that MPI_Aint will be at least the same size as ptrdiff_t, do we > actually have a problem with subtracting MPI_Aints to find pointer diffs? > It seems like this may actually be ok. There's still a problem. I don't think that ptrdiff_t has anything to do with it since that normally only comes into play when you subtract two _pointers_, not two integers acting sort of like pointers. As an example, take a look at this little test program. It subtracts two plausible addresses from the middle of the address space but underflows the signed arithmetic anyway. When I compile this with '-ftrapv' under clang then I get a core dump when executing this program. ----8<---- #include <stdio.h> #include <limits.h> typedef long long MPI_Aint; int main(int argc, char **argv) { MPI_Aint a = LLONG_MIN; /* 0x8000000000000000LL */ MPI_Aint b = 0x7ffffffffffffffcLL; MPI_Aint c = a - b; /* expect 0x4LL if signed overflow were defined */ printf("a=%#llx b=%#llx c=%#llx\n", a, b, c); return 0; } ----8<---- The overflow occurs because "(a - b)" is really "(-9223372036854775808 - 9223372036854775804)" in signed integer arithmetic. Note that most implementations will give you the expected value if you don't set '-ftrapv', but that's *undefined behavior* according to the C standard and should not be relied upon (see http://www.airs.com/blog/archives/120) This is all just the C side of things. I have no idea whether Fortran integer overflow is defined. -Dave

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