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**Originally by _robl_ on 2016-10-04 16:38:02 -0500** --- **Attachment added:** [`margo_mpi_test[1].tgz`](https://github.com/pmodels/mpich-trac-attachments/blob/master/attachments/2355/margo_mpi_test[1].tgz) (8.0 KiB) test case for RPC-oriented workload
**Originally by _gropp_ on 2013-01-26 08:47:16 -0600** --- I do have code for most of these which has been awaiting review by the original datatype/dataloop code author, Rob Ross. I...
**Originally by _goodell_ on 2013-01-26 10:00:38 -0600** --- No objections to what you're saying and no blame here. I just wanted to make sure that we did not forget them...
**Originally by _robl_ on 2013-07-23 14:39:37 -0500** --- I think we have to take Rob Ross off the critical path for this. Can anyone else review the changes?
**Originally by _robl_ on 2014-01-14 15:11:18 -0600** --- Bill sent an old version of the patch to the list, and I wrangled it into the tree. Code lives at `mpich-review/1788-optimized-dataloop`...
**Originally by _Rob Latham [email protected]_ on 2014-01-16 21:39:50 -0600** --- In 38ef5818a883568e7dcc80f0e2aa0cfc972469be: a partial round of datatype optimizations Some datatype performance tests in the MPICH test suite fail: (perf/twovec, perf/nestvec,...
**Originally by _robl_ on 2014-01-30 12:49:22 -0600** --- **Attachment added:** [`ForMPICH.tgz`](https://github.com/pmodels/mpich-trac-attachments/blob/master/attachments/1788/ForMPICH.tgz) (111.3 KiB) halo exchange testcase from Daniel Kokron NASA Ames (ARC-TN) SciCon group
**Originally by _gropp_ on 2014-02-19 15:42:33 -0600** --- The halo exchange testcase makes use of non-standard Fortran compilation features. I can't build it on my Mac because it makes invalid...
**Originally by _gropp_ on 2014-02-19 15:47:41 -0600** --- See mpich-review/1788-optimized-dataloop-feb19 for the proposed fix. This passes the MPICH-2, MPICH-1, and Intel tests (specifically, the tests that fail, fail without this...
**Originally by _robl_ on 2014-06-20 15:01:15 -0500** --- I can't get this to reproduce on my laptop or on fusion...