I'm not exactly sure how to fix what you described. The semicolon is escaped
because otherwise the cmd line would think it had been separated - the orted
cmd line is ssh'd to the remote node and cannot include an unescaped
terminator. The space isn't a "special character" in that sense, and actually
exists in some params.
The reason you didn't get an immediate error is that the MCA param you flubbed
is only read/used by the MPI layer, and mpirun isn't an MPI application. So
mpirun has no visibility into that param. It gets included on the orted cmd
line solely because it was given in the environment, and we don't have any
current method for separating params out to say "this one doesn't apply to an
orted".
So it got passed to the remote end. I can look to see if there is something
generic we can do (perhaps enclosing each param in quotes to avoid any special
character issues) - will see if something like that might help. Best that will
happen, however, is that we launch the app and then have those procs spit out
the error.
On Jul 18, 2014, at 9:45 AM, Dirk Schubert <dschub...@allinea.com> wrote:
> Hi,
>
> It seems that OMPI_MCA environment variables with spaces (for rsh?) are
> incorrectly escaped.
>
> This happens with version 1.8 and 1.8.1. I did not try Version 1.7!
>
> To reproduce:
>
> 0) ./configure && make && make install # no special configure flags required
> 1) Create a host file, with a couple of hostnames in it.
> 2) export OMPI_MCA_mpi_show_handle_leaks="1 --foo"
> 3) mpirun -hostfile /path/to/hostfile -n 1 /code/to/mpi.exe
>
> Expected:
>
> --------------------------------------------------------------------------
> An invalid value was supplied for an enum variable.
>
> Variable : mpi_show_handle_leaks
> Value : 1 --foo
> Valid values : 0: f|false|disabled, 1: t|true|enabled
> --------------------------------------------------------------------------
> ...
>
> Actual:
>
> orted: Error: unknown option "--foo"
> Type 'orted --help' for usage.
> Usage: orted [OPTION]...
> -am <arg0> Aggregate MCA parameter set file list
> ...
>
>
> A potential patch that fixes the problem (but then I don't know why ";" would
> be considered a special character in the first place).
>
> --- ./orte/mca/plm/rsh/plm_rsh_module.c.orig 2014-07-18 17:25:38.477318000
> +0100
> +++ ./orte/mca/plm/rsh/plm_rsh_module.c 2014-07-18 17:25:06.936780000 +0100
> @@ -618,7 +618,7 @@
> /* if the value has a special character in it,
> * then protect it with quotes
> */
> - if (NULL != strchr(value, ';')) {
> + if (NULL != strchr(value, ' ')) {
> char *p2;
> asprintf(&p2, "\"%s\"", value);
> opal_argv_append(&argc, &argv, p2);
>
> Regards,
> Dirk
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> Link to this post:
> http://www.open-mpi.org/community/lists/users/2014/07/24812.php
