Hello to all and to whoever is from the United States, /Happy 4th of Jully/ ! I am having these collective aborts while executing a program. More specifically the error is : /rank 7 in job 38 Calliope_50667 caused collective abort of all ranks exit status of rank 7: killed by signal 11 [cli_2]: aborting job: Fatal error in MPI_Allgather: Error message texts are not available [cli_4]: aborting job: Fatal error in MPI_Allgather: Error message texts are not available// / But the /MPI_Allgather/ command it's written correctly, since i checked it multiple times and what about the "/Error message texts are not available/"? /MPI_Allgather(&docs, 1, MPI_INT, texts_vectors, 1, MPI_INT, MPI_COMM_WORLD);/// Where /docs/ is a int variable holding a single value for each node, and /texts_vectors/ is an int array with the size of the population of the nodes. I compile the programm using /mpicc -g -o prog prog.c -lm/ and execute using /mpiexec -n number_of_nodes `pwd`/prog/ I am using MPICH2 1.0.6 in a linux cluster machine that i use for the purposes of my bachelor thesis. I know it's an older version, but the machine belongs to an institute, so i don't have the permission to upgrade it.