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Subject: [OMPI devel] RFC: Bump minimum sm pool size to 128K from 64K
From: Rolf vandeVaart (rvandevaart_at_[hidden])
Date: 2014-07-24 14:57:29

WHAT: Bump up the minimum sm pool size to 128K from 64K.
WHY: When running OSU benchmark on 2 nodes and utilizing a larger btl_smcuda_max_send_size, we can run into the case where the free list cannot grow. This is not a common case, but it is something that folks sometimes experiment with. Also note that this minimum was set back 5 years ago so it seems that it could be time to bump it up.
WHEN: Tuesday, July 29, 2014 after weekly concall if there are no objections.

[rvandevaart_at_ivy0 ompi-trunk-regerror]$ svn diff ompi/mca/mpool/sm/mpool_sm_component.c
Index: ompi/mca/mpool/sm/mpool_sm_component.c
--- ompi/mca/mpool/sm/mpool_sm_component.c (revision 32293)
+++ ompi/mca/mpool/sm/mpool_sm_component.c (working copy)
@@ -80,7 +80,7 @@
-static long default_min = 67108864;
+static long default_min = 134217728;
 static unsigned long long ompi_mpool_sm_min_size;
 static int ompi_mpool_sm_verbose;
[rvandevaart_at_drossetti-ivy0 ompi-trunk-regerror]$
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