fix warning (#1041)

6bb2791e · cjjia · Tianqi Chen · 3d64cf92 · 6bb2791e
Commit 6bb2791e authored Mar 29, 2018 by cjjia Committed by Tianqi Chen Mar 28, 2018
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src/runtime/threading_backend.cc
+1 -1

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--- a/src/runtime/threading_backend.cc
+++ b/src/runtime/threading_backend.cc
@@ -28,7 +28,7 @@ class ThreadGroup::Impl {
    }
    const char *val = getenv("TVM_BIND_THREADS");
    if (val == nullptr || atoi(val) == 1) {
-      if (num_workers_ <= std::thread::hardware_concurrency()) {
+      if (static_cast<size_t>(num_workers_) <= std::thread::hardware_concurrency()) {
        SetAffinity(exclude_worker0);
      } else {
        LOG(WARNING)