From 1fdf2460961947006472a24d88e4757249629647 Mon Sep 17 00:00:00 2001 From: Min Si Date: Sun, 11 Nov 2018 15:46:07 -0600 Subject: [PATCH] doc: updated CHANGES --- CHANGES | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/CHANGES b/CHANGES index 37b005e7..67a7993c 100644 --- a/CHANGES +++ b/CHANGES @@ -4,16 +4,23 @@ - Full support of OpenSHMEM 1.4 specification. +- Function inline for all OSHMPI internal routines. + - Caching internal MPI communicators for collective operations with PE active set. -- Support multithreading OpenSHMEM safety. Internal POSIX mutex-based +- OpenSHMEM multithreading safety support. Internal POSIX mutex-based per-object critical sections are enabled to ensure thread-safety when using OSHMPI with multithreaded OpenSHMEM program (SHMEM_THREAD_MULTIPLE). See --enable-threads configure option. -- Active message support of OpenSHMEM atomic operations when the MPI library - cannot ensure atomicity between MPI accumulates with different reduce - operations. An MPI accumulates based version can be enabled by setting - configure option --enable-amo=direct, or setting the OSHMPI_AMO_OPS - environment variable at runtime. +- Active message support of OpenSHMEM atomic operations. MPI accumulates + cannot be directly used in OpenSHMEM atomics because MPI does not + guarantee atomicity between different reduce operations (e.g., add and cswap). + Therefore, the active message based method is used by default. An MPI + accumulates based version can be enabled by setting the configure option + --enable-amo=direct, or setting the OSHMPI_AMO_OPS environment variable + at runtime (See README). + +- Asynchronous progress thread for active message based atomic operations. + Disabled by default. See --enable-async-thread configure option.