I am not able to compile with MPI compiler with C++

Question

I was trying to compile a very simple MPI hello_world:

#include <stdio.h>
#include <mpi.h>

int main(int argc, char *argv[]) {
    int numprocs, rank, namelen;
    char processor_name[MPI_MAX_PROCESSOR_NAME];

    MPI_Init(&argc, &argv);
    MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    MPI_Get_processor_name(processor_name, &namelen);

    printf("Process %d on %s out of %d\n", rank, processor_name, numprocs);

    MPI_Finalize();
}

And got the following problem:

    Catastrophic error: could not set locale "" to allow processing of multibyte characters

I really don't know how to figure it out.

Does the error message give a filename and/or line number? Does your source file have non-ASCII characters in it? Is your source file encoded in UTF-16? — Adam Rosenfield
– Adam Rosenfield, Commented Nov 14, 2012 at 19:26
Is that compiler error? Which line does it come from? Or is it runtime error, presumably generated by MPI_Get_processor_name, since that's the only one handling strings? Does it disappear if you remove string stuff? — hyde
– hyde, Commented Nov 14, 2012 at 20:04
You're on Mac OSX? They had an issue with locales being unavailable, IIRC — sehe
– sehe, Commented Nov 14, 2012 at 20:38
You've shown all your code, but not your commands and not your full output. — Lightness Races in Orbit
– Lightness Races in Orbit, Commented Nov 14, 2012 at 20:39

hyde · Accepted Answer · 2012-11-14 20:00:44Z

19

Try defining environment variables

LANG=en_US.utf8
LC_ALL=en_US.utf8

Assuming you're on unix, also try man locale and locale -a at command line, and google for "utf locale" and similar searches.

answered Nov 14, 2012 at 20:00

hyde

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3 Comments

user1819905 Over a year ago

Yes, That is the problem. The issue is my computer LANG=UTF-8 and when I ssh to the remote server, the server's LANG changed!!!

Hristo Iliev Over a year ago

@user1819905, UTF-8 is not a valid language specification. It should be something like en_US.UTF-8 or de_DE.UTF-8. And yes, it could be propagated to the server environment over SSH if the SSH client is configured to do so. The SSH client in 10.7+ is.

Tack_Tau Over a year ago

This works for me. Seems that I have different UTF encoding between my local machine and the remote server.

Juanjo Aucar · Accepted Answer · 2021-11-03 21:48:46Z

0

Re-defining the environment variable LANG solved the problem for me, as pointed out (setting LANG=en_US.utf8).

I may say that I'm conecting to a foreign server, and there's where I get the problem compiling code with Intel compilers.

answered Nov 3, 2021 at 21:48

Juanjo Aucar

1

1 Comment

Ahmet Aygun Over a year ago

This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review

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