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man: mcexec: add "-n <ppn>" option mandatory when using MPI (except Fujitsu MPI)

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Change-Id: I6d2d0337fdab13325642344529401f86bbadfdcd
This commit is contained in:
Masamichi Takagi
2020-07-30 15:10:42 +09:00
committed by Masamichi Takagi
parent c55a02ffba
commit 1bfa339ccf
1 changed files with 7 additions and 3 deletions
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executer/user/mcexec.1in
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@ -22,11 +22,15 @@ are described below.
.TP
.B -n N
Specify the number of MPI ranks run on the node.
e.g.,
Specify the number of MPI ranks run on the node when using MPI (except Fujitsu MPI).
For example,
.br
$ mpirun -n 32 -ppn 4 mcexec -n 4 ./a.out
In the above example, the ./a.out program runs on eight nodes each of
.br
the ./a.out program runs on eight nodes each of
which has four processes.
You must specify this option when using MPI (except Fujitsu MPI).
Undefined behavior entails if not.
.TP
.B -t N