azlinux3 dnf packages for compiler installation

[saibulusu]

For Azlinux3, we cannot use the dnf packages gcc-toolset and gcc-toolset-10-gcc-gfortran. Installing other packages via dnf.
Tested manually on an azlinux3 VM using:

• PERF-MEM-LMBENCH.json
• PERF-COMPRESSION-LZBENCH.json
• PERF-CPU-LAPACK.json

[yangpanMS]

If we do this, are we still checking if "CompilerVersion" matches what actually got installed?. Otherwise user might want gcc14 but got gcc11 instead.

[yangpanMS]

On AzLinux since you can;t specify, user need to either overwrite the compilerVersion to "", or provide a version that matches the version installed

[yangpanMS]

Actually, let's do this on all other distro as well. Default compiler version to string.empty, and if that happens, install version-less gcc/gfortran etc. If they specify a version, you install gcc-10 etc. On AzLinux, we throw error if user tries to pass in a version

[saibulusu]

Actually, let's do this on all other distro as well. Default compiler version to string.empty, and if that happens, install version-less gcc/gfortran etc. If they specify a version, you install gcc-10 etc. On AzLinux, we throw error if user tries to pass in a version

How should we handle SetGccPriorityAsync when the user does not supply a version?

[saibulusu]

Tested LMBench on Ubuntu, CentOS, RHEL, & AzLinux.

[saibulusu]

@microsoft-github-policy-service agree

[saibulusu]

@microsoft-github-policy-service rerun

[yangpanMS]

Please also test on SPECcpu, which has more complexity in compiler definition.

[yangpanMS]

Please confirm that we will send the compiler version in telemetry properly. Ideally in metrics

[saibulusu]

For speccpu:
Ran speccpu fprate on an azlinux3 VM, metrics can be viewed here:

cluster('azurecrcworkloads.westus2.kusto.windows.net').database('WorkloadPerformance').Metrics_Dev01
| where Timestamp > ago (3d)
| where ExperimentId == "bacc1a9c-543d-4a1b-9bb4-8af8af681bc5"
| where ToolName != "atop"

Removed gcc limit in documentation.

For Alex's query on compiler version:
I am reading from metadata to get the compiler version for speccpu when the version is not supplied by the user. So, I believe it is being correctly logged:

compilerMetadata.TryGetValue("compilerVersion_gcc", out compilerVersion)