Giuseppe - So if you're creating the separate communicators to address issues with collective IO aggregation memory and performance, actually in MPICH 3.2rc1 there already exists a one-sided aggregation method that does away with the alltoall calls with significant performance and memory enhancements, although currently this is only implemented for GPFS. See src/mpi/romio/adio/ad_gpfs/ad_gpfs_tuning.c and search for 'one-sided' essentially it is enabled with the env vars GPFSMPIO_WRITE_AGGMETHOD and GPFSMPIO_READ_AGGMETHOD with some others for additional tweaking. And actually if you are using NFS there are a couple of tricks to get it to work with that also let me know and I can help you. -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Wednesday, October 21, 2015 2:07 AM To: [email protected] Subject: devel Digest, Vol 32, Issue 2 Send devel mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit https://lists.mpich.org/mailman/listinfo/devel or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of devel digest..." Today's Topics: 1. Re: Argonne Spam Quarantine Notification (Bland, Wesley) 2. Re: Argonne Spam Quarantine Notification (Jeff Hammond) 3. Re: Argonne Spam Quarantine Notification (Kenneth Raffenetti) 4. [PATCH] MPI_Aint_* tests: use MPI_INTEGER datatype in Fortran (Jeff Squyres) 5. Re: [PATCH] MPI_Aint_* tests: use MPI_INTEGER datatype in Fortran (Kenneth Raffenetti) 6. MPI_Alltoall fails when called with newly created communicators (Giuseppe Congiu) ---------------------------------------------------------------------- Message: 1 Date: Thu, 1 Oct 2015 11:41:39 +0000 From: "Bland, Wesley" <[email protected]> To: "[email protected]" <[email protected]> Subject: Re: [mpich-devel] Argonne Spam Quarantine Notification Message-ID: <[email protected]> Content-Type: text/plain; charset="us-ascii" Looks like it didn't work. On Oct 1, 2015, at 6:00 AM, Argonne Anti Spam Quarantine <[email protected]<mailto:[email protected]>> wrote: IronPort Spam Quarantine Notification If a spam message was missed, or if a message was incorrectly flagged as spam, you can add the sender to a personal safelist or blocklist via the quarantine. Senders on the safelist will not be flagged as spam, and senders on the blocklist will be automatically quarantined. For more information, visit: https://wiki.inside.anl.gov/inside/Ironport_Anti-Spam_Appliances/Documentati on_for_Users The message(s) below have been quarantined by the Argonne National Laboratory spam filtering system. There are 2 new messages in your Email Quarantine since you received your last Spam Quarantine Notification. If the messages below are spam, you do not need to take any action. Messages will be automatically deleted from the quarantine after 28 day(s). If any of the messages below are not spam, click the 'Release' link to have them sent to your Inbox. Messages that have been correctly flagged as spam do not need to be reported. Quarantined Email From Subject Date Release<http://mailgateway.anl.gov:8080/Message?action=Release&mid=95404728& h=99ea5934cf8758aecc0fe59fc5e4af52&email=devel%40mpich.org> "Lawyer Central" <homo@joka-interna... *****SPAM*****We Provide you the best Lawyers in your area<http://mailgateway.anl.gov:8080/Message?action=Detail&mid=95404728&h=99 ea5934cf8758aecc0fe59fc5e4af52&email=devel%40mpich.org> 30 Sep 2015 Release<http://mailgateway.anl.gov:8080/Message?action=Release&mid=95404711& h=004b11152d9d7c8f42a99e091808c1af&email=devel%40mpich.org> "Lawyer Connection" <disobligingnes... *****SPAM*****We have the right lawyer to represent you<http://mailgateway.anl.gov:8080/Message?action=Detail&mid=95404711&h=004 b11152d9d7c8f42a99e091808c1af&email=devel%40mpich.org> 30 Sep 2015 View All Quarantined Messages(4)<http://mailgateway.anl.gov:8080/Search?h=2ffb2bd0571f729efb89bf1 1a9fc382c&email=devel%40mpich.org> Note: This message has been sent by a notification only system. Please do not reply If the above links do not work, please copy and paste the following URL into a Web browser: http://mailgateway.anl.gov:8080/Search?h=2ffb2bd0571f729efb89bf11a9fc382c&em ail=devel%40mpich.org If you have any questions regarding the Laboratory spam filtering product, please contact the CIS helpdesk at [email protected]<mailto:[email protected]> or x-9999 option 2. _______________________________________________ To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/devel ------------------------------ Message: 2 Date: Thu, 1 Oct 2015 04:53:20 -0700 From: Jeff Hammond <[email protected]> To: "[email protected]" <[email protected]> Subject: Re: [mpich-devel] Argonne Spam Quarantine Notification Message-ID: <CAGKz=u++GoNvu4DD+eGW_6XYpyaUEy0JkL+sqV0uPV=n+EuhzA@mail.gmail.com> Content-Type: text/plain; charset="utf-8" If all else fails, individuals can apply the time-tested solution of email filters... Jeff On Thursday, October 1, 2015, Bland, Wesley <[email protected]> wrote:

Looks like it didn't work.

On Oct 1, 2015, at 6:00 AM, Argonne Anti Spam Quarantine < [email protected] <javascript:;><mailto:[email protected] <javascript:;>>> wrote:

IronPort Spam Quarantine Notification

If a spam message was missed, or if a message was incorrectly flagged as spam, you can add the sender to a personal safelist or blocklist via the quarantine. Senders on the safelist will not be flagged as spam, and senders on the blocklist will be automatically quarantined. For more information, visit:

https://wiki.inside.anl.gov/inside/Ironport_Anti-Spam_Appliances/Docum entation_for_Users

The message(s) below have been quarantined by the Argonne National Laboratory spam filtering system.

There are 2 new messages in your Email Quarantine since you received your last Spam Quarantine Notification. If the messages below are spam, you do not need to take any action. Messages will be automatically deleted from the quarantine after 28 day(s).

If any of the messages below are not spam, click the 'Release' link to have them sent to your Inbox.

Messages that have been correctly flagged as spam do not need to be reported.

Quarantined Email From Subject Date Release< http://mailgateway.anl.gov:8080/Message?action=Release&mid=95404728&h= 99ea5934cf8758aecc0fe59fc5e4af52&email=devel%40mpich.org> "Lawyer Central" <homo@joka-interna... *****SPAM*****We Provide you the best Lawyers in your area<

http://mailgateway.anl.gov:8080/Message?action=Detail&mid=95404728&h=99ea593 4cf8758aecc0fe59fc5e4af52&email=devel%40mpich.org>

30 Sep 2015 Release< http://mailgateway.anl.gov:8080/Message?action=Release&mid=95404711&h= 004b11152d9d7c8f42a99e091808c1af&email=devel%40mpich.org> "Lawyer Connection" <disobligingnes... *****SPAM*****We have the right lawyer to represent you< http://mailgateway.anl.gov:8080/Message?action=Detail&mid=95404711&h=0 04b11152d9d7c8f42a99e091808c1af&email=devel%40mpich.org> 30 Sep 2015 View All Quarantined Messages(4)< http://mailgateway.anl.gov:8080/Search?h=2ffb2bd0571f729efb89bf11a9fc3 82c&email=devel%40mpich.org

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[email protected] <javascript:;>> or x-9999 option 2. _______________________________________________ To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/devel _______________________________________________ To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/devel

-- Jeff Hammond [email protected] http://jeffhammond.github.io/