RHOAIENG-9853: fix(rocm): remove more files that instructlab also rem…

…oves

Turns out we can remove the llvm installation if we do it forcibly, without removing dependencies.
Additionally, there are gfx files for all supported cards, so since we support less, we can remove many.

See https://github.com/tiran/instructlab-containers/blob/main/containers/rocm/Containerfile.c9s#L47

rocm/ubi9-python-3.9/Dockerfile

@@ -19,6 +19,9 @@ WORKDIR /opt/app-root/bin
 ARG ROCM_VERSION=6.1
 ARG AMDGPU_VERSION=6.1
 
+# default: same targets and ROCm version as https://github.com/tiran/instructlab-containers/blob/main/containers/rocm/Containerfile.c9s#L47
+ARG AMDGPU_TARGETS=gfx900;gfx906:xnack-;gfx908:xnack-;gfx90a:xnack-;gfx90a:xnack+;gfx942;gfx1030;gfx1100
+
 # Enable epel-release repositories
 
 # Install the ROCm rpms
@@ -33,7 +36,15 @@ RUN echo "[ROCm]" > /etc/yum.repos.d/rocm.repo && \
     echo "enabled=1" >> /etc/yum.repos.d/amdgpu.repo && \
     echo "gpgcheck=0" >> /etc/yum.repos.d/amdgpu.repo && \
     yum install -y rocm && \
-    yum clean all && rm -rf /var/cache/yum
+    yum clean all && rm -rf /var/cache/yum && \
+    # force remove 'rocm-llvm' from runtime, saves 3.6 GB on disk
+    rpm -e --nodeps rocm-llvm && \
+    # remove gfx files for unused ISAs, saves about 1.7 GB on disk
+    # sed creates regular expression '.*\(gfx900\|gfx906\|...\).*'
+    find /opt/rocm/lib/ -type f \
+        -and -name '*gfx*' \
+        -and -not -regex '.*\('$(echo $AMDGPU_TARGETS | sed -e 's/;/\\|/g' -e 's/:xnack[-+]//g')'\).*' \
+        -print0 | xargs -0 rm -v
 
 # Restore notebook user workspace
 USER 1001