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Isambard Icelake Node Recognised as Cascadelake #78

Open kaanolgu opened 9 months ago

kaanolgu commented 9 months ago

I am trying to use Spack on Isambard with git clone from the original repository. When I login to icelake partition, and execute the spack arch command it prints out cray-rhel8-cascadelakeinstead of cray-rhel8-icelake is there any fix for this ? Also when I try to use target=icelake it says spack install zlib target=icelake

==> Error: concretization failed for the following reasons:

   1. cannot satisfy a requirement for package 'zlib'.

Spack Version : 0.21.0.dev0 (646e7b4b007ccb2fd58742e9acc43faf7f491530)

tomgreen66 commented 3 months ago

Just want to comment - this is due to a limitation in the Cray Programming Modules on the system not with archspec or Spack.

alalazo commented 3 months ago

Also when I try to use target=icelake it says [ ... ]

Try using:

spack config add concretizer:targets:host_compatible:false
alalazo commented 3 months ago

@tomgreen66 Thanks for the comment. Can you give a bit more insight into how Cray Modules influence this?

tomgreen66 commented 3 months ago

If you take a look in https://github.com/spack/spack/blob/develop/lib/spack/spack/platforms/cray.py you will see: https://github.com/spack/spack/blob/aa39465188c6c0c29ebac0fd3e315d17473dcfee/lib/spack/spack/platforms/cray.py#L64-L67

where it find the modules which are available for possible targets. It doesn't find an Icelake module but does find cascade lake module. Unfortunately due to the nature of Isambard having a Multi-Archtiecture Comparison System (MACS) the possible upgrade routes to support all architectures for the programming environments have certain limits and in this case we couldn't upgrade the Cray modules to support Icelake and was going to take a look when we migrate to Isambard 3 (where we will have production Grace-Grace system) and review what nodes can migrate across.

Does that make sense?