[Mpi3-ft] UAB Alternative Fault-Tolerant Proposal
Dear group, As promised right after the last MPI-3 meeting, we have prepared an alternative Fault-tolerant proposal for MPI-3. This started from the premise that by starting from a different set of assumptions, we could provide a complete alternative. This starts from scratch per se, as mentioned earlier. We denote this FA-MPI or Fault-Aware MPI, to distinguish it from the main line of discussion, which is of course Fault-Tolerant MPI. The main idea is hardened collective transactions on all non-blocking MPI-3 programs. The use of all non-blocking MPI operations is designed to connect efficiently with the expectation of highly non-blocking programs for exascale, ones that emphasize overlap of communication, computation, and I/O. This is not yet condensed into an MPI-3 Format proposal (we will only do so if there is significant interest in pursuing this proposal). This lacks section 7.7 MPI-3 1-sided, 7.8 I/O, 7.9 initialization/deinitialization of I/O & 1-sided (ancillary); Nonetheless, we wanted to share the proposal now. We are still evaluating MPI-3 1-sided :-) frankly. We will be done with the File I/O in a few days; and the 1-sided shortly thereafter. We recognize that this is a quite different approach, and may or may not be appropriate for the Forum at this time. Once we get feedback, we intend to implement this model ASAP... we are just beginning implementation plans. If it does not get to be part of an MPI-3 standard, we are still interested in fully expressing this model as extensions for MPI-3. With kind regards, Tony PS Please note that this is a draft to the MPI-3 Forum, it is not a publication, just a draft. We will provide a version of this a) as an MPI-3 proposal if that's of interest, and b) this document as a finalized tech report, and later c) a conference paper :-) -- Anthony Skjellum, PhD Professor and Chair Dept. of Computer and Information Sciences Director, UAB Center for Information Assurance and Joint Forensics Research ("The Center") University of Alabama at Birmingham +1-(205)934-8657; FAX: +1- (205)934-5473 ___________________________________________ CONFIDENTIALITY: This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. Please consider the environment before printing this e-mail
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Anthony Skjellum