From b1f33f54c302400bd79ad0d32c1bbdb89b2f44ef Mon Sep 17 00:00:00 2001
From: jgrusewski <jgrusewski@localhost>
Date: Wed, 27 May 2026 20:53:16 +0200
Subject: [PATCH] fix(argo): set FOXHUNT_CUDA_ARCH from detected compute cap
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ml-backtesting/build.rs reads FOXHUNT_CUDA_ARCH (defaults sm_86),
ml-alpha/build.rs reads CUDA_COMPUTE_CAP. Template only set the
latter, so lobsim cubins compiled for sm_86 on H100 (sm_90) →
CUDA_ERROR_NO_BINARY_FOR_GPU at runtime.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---
 infra/k8s/argo/alpha-rl-template.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/infra/k8s/argo/alpha-rl-template.yaml b/infra/k8s/argo/alpha-rl-template.yaml
index 5a00bfcc4..81d9d4b44 100644
--- a/infra/k8s/argo/alpha-rl-template.yaml
+++ b/infra/k8s/argo/alpha-rl-template.yaml
@@ -158,6 +158,7 @@ spec:
 
             # Auto-detect GPU compute capability for all crates' build.rs
             export CUDA_COMPUTE_CAP=$(nvidia-smi --query-gpu=compute_cap --format=csv,noheader | head -1 | tr -d '.')
+            export FOXHUNT_CUDA_ARCH="sm_${CUDA_COMPUTE_CAP}"
             echo "=== GPU arch: sm_${CUDA_COMPUTE_CAP} ==="
 
             # Clear stale build artifacts when arch changes