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coarray and coroutines communications using mixed infiniband network

bclmary
Beginner
‎06-11-2025 08:32 AM
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Hello,

I am using a cluster with two generations of infiniband networks : EDR and HDR. The HDR network is configured to be compatible with the EDR one, through 100 Gb/s.

This mixed network works fine with the intel mpi library (using mpi or mpi_f08 modules).

But using coarrays or coroutines (tested with co_sum and co_broadcast), the program just indefinitely freeze before doing anything.

When using only EDR or HDR network only, the program works just fine.

Any help would be appreciated.

Regards,

B. Mary

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