Pin Open MPI in docker image to fix SCORPIO build (MPI_Type_hvector removed)

[jasonb5]

Note: This is E3SM-specific (SCORPIO external / E3SM docker image).

Description

The spio component fails to compile in the docker environment because SCORPIO uses the deprecated MPI-1 symbol MPI_Type_hvector, which has been removed in the Open MPI version currently installed in the image.

Affected Test

SMS_P1.T42_T42.S.docker_gnu

Component / Build Log

• Component: spio (SCORPIO I/O library)
• Log: bld/spio.bldlog.*

Error

/e3sm/externals/scorpio/src/clib/core/rearr/pio_rearr_contig.cpp:391:17:
  error: 'MPI_Type_hvector' was not declared in this scope; did you mean 'MPI_Type_vector'?
(also lines 405, 479, 493, 1390, 1402)

gmake[2]: *** [.../pio_rearr_contig.cpp.o] Error 1
gmake[1]: *** [.../spio_core_rearr.dir/all] Error 2
gmake:   *** [all] Error 2

Root Cause

MPI_Type_hvector is an MPI-1 symbol deprecated in MPI-2 and removed by default in recent Open MPI releases. The SCORPIO external still references it, so the build breaks against the newer MPI in the docker image.

Fix

Pin Open MPI in the docker image to a version that still exposes the legacy MPI-1 symbols. (Longer term, SCORPIO should migrate MPI_Type_hvector -> MPI_Type_create_hvector.)

Environment

• Machine: docker
• Compiler: gnu
• Project: E3SM

[rljacob]

ping @jayeshkrishna

[rljacob]

SCORPIO 2.0.3 removed the hvector use E3SM-Project/scorpio#708