On Jul 15, 2014, at 2:03 PM, Mike Dubman <mi...@dev.mellanox.co.il> wrote:
> these are two separate issues:
>
> 1. -x var=val (or -mca opal_base_envlist var=val) will work in the same way
> opal_base_envlist does the same as "-x" and can be used in the very same
> fashion as -x
>
> 2. When list of vars is passed with help of opal_base_envlist, the escaping
> is possible but escaped char should differ from delimiter char.
That would be my preference (use something like "\" as the escape char).
Though we could always go with a scheme where a doubled delimiter means
"literal delimiter", sort of like "$$" in a Makefile.
> I think -x should stay as shotrt-form alias for -mca opal_base_envlist
> var=val and -mca opal_base_envlist var.
> on dev meeting it was decided to deprecate it as some point.
Can we revisit this decision? Mike and I both seem to be in favor of retaining
"-x", at least for non-conflicting uses. Would someone who is against
retaining "-x" please speak up in favor of that position?
Also, Mike, I just looked again at the code and I don't think it is robustly
checking for conflict cases. It's possible to do this and you won't get an
error with the current code, right?
----8<----
$ mpirun -mca mca_base_env_list foo=bar -x foo=baz ...
----8<----
See this code, which only looks at the environment when looking for
"mca_base_env_list":
> Modified: trunk/orte/tools/orterun/orterun.c
> ==============================================================================
> --- trunk/orte/tools/orterun/orterun.c Tue Jul 8 20:10:04 2014
> (r32162)
> +++ trunk/orte/tools/orterun/orterun.c 2014-07-08 20:38:25 EDT (Tue,
> 08 Jul 2014) (r32163)
> @@ -1722,6 +1722,13 @@
>
> /* Did the user request to export any environment variables on the cmd
> line? */
> if (opal_cmd_line_is_taken(&cmd_line, "x")) {
> + char* env_set_flag = getenv("OMPI_MCA_mca_base_env_list");
> + if (NULL != env_set_flag) {
> + orte_show_help("help-orterun.txt", "orterun:conflict-env-set",
> false);
> + return ORTE_ERR_FATAL;
> + } else {
> + orte_show_help("help-orterun.txt", "orterun:deprecated-env-set",
> false);
> + }
> j = opal_cmd_line_get_ninsts(&cmd_line, "x");
> for (i = 0; i < j; ++i) {
> param = opal_cmd_line_get_param(&cmd_line, "x", i, 0);
-Dave
