323aff7b1e
- Simple components for getting and setting processor affinity of a process; does *not* include scheduling decisions - No one in the OMPI code base invokes the framework yet - Added linux component for using sched_setaffinity() - Added shell solaris component that will use processor_bind() (currently .ompi_ignore'd) This commit was SVN r6854.
70 строки
2.7 KiB
Bash
70 строки
2.7 KiB
Bash
# -*- shell-script -*-
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#
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# Copyright (c) 2004-2005 The Trustees of Indiana University.
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# All rights reserved.
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# Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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# All rights reserved.
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# Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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# University of Stuttgart. All rights reserved.
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# Copyright (c) 2004-2005 The Regents of the University of California.
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# All rights reserved.
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# $COPYRIGHT$
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#
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# Additional copyrights may follow
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#
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# $HEADER$
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#
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# MCA_ptl_tcp_CONFIG([action-if-found], [action-if-not-found])
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# -----------------------------------------------------------
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AC_DEFUN([MCA_paffinity_linux_CONFIG],[
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# check for sched_setaffinity(), which originated in Linux kernel
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# 2.5.8, but was back-ported in several distro's 2.4 kernels.
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AC_CHECK_FUNC([sched_setaffinity],
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[$1],
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[$2])
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# Linux sucks. There are at least 3 different ways that
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# sched_setaffinity is implemented (only one of which -- the most
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# outdated -- is documented in the sched_setaffinity(2) man page).
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# 1. int sched_setaffinity(pid_t pid, unsigned int len, unsigned
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# long *mask);
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# This originated in 2.5 kernels (which we won't worry about) and
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# some distros back-ported it to their 2.4 kernels. It's unknown
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# if this appears in any 2.6 kernels.
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# 2. int sched_setaffinity (pid_t __pid, size_t __cpusetsize,
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# const cpu_set_t *__cpuset);
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# This appears to be in recent 2.6 kernels (e.g., 2.6.11). I
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# don't know when #1 changed into #2. However, this prototype is
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# the nicest -- the cpu_set_t type is accompanied by fdset-like
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# CPU_ZERO(), CPU_SET(), CPU_ISSET(), etc. macros.
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# 3. int sched_setaffinity (pid_t __pid, const cpu_set_t *__mask);
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# (note the missing len parameter) This may be an SGI Altix
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# exclusive -- they appear to have a 2.4-based kernel, and
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# therefore likely back-ported the 2.5 work but modified it for
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# their needs. Similar to #2, the cpu_set_t type is accompanied
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# by fdset-like CPU_ZERO(), CPU_SET(), CPU_ISSET(), etc. macros.
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# This configure script has to figure out which one to use. :-\
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AH_TEMPLATE([HAVE_cpu_set_t], [Whether we have the cpu_set_t type or not])
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AC_CHECK_TYPES([cpu_set_t],
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[AC_DEFINE([HAVE_cpu_set_t], [1]) have_cpu_set_t=1],
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[have_cpu_set_t=0],
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[#include <sched.h>])
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if test "$have_cpu_set_t" = "1"; then
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# Note: SGI Altix tests not written yet -- having other
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# problems with that machine and awaiting expert help from SGI
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# engineers.
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echo > /dev/null
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fi
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unset have_cpu_set_t
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])dnl
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