diff --git a/libc/src/__support/RPC/rpc_util.h b/libc/src/__support/RPC/rpc_util.h
--- a/libc/src/__support/RPC/rpc_util.h
+++ b/libc/src/__support/RPC/rpc_util.h
@@ -9,12 +9,16 @@
 #ifndef LLVM_LIBC_SRC_SUPPORT_RPC_RPC_UTILS_H
 #define LLVM_LIBC_SRC_SUPPORT_RPC_RPC_UTILS_H
 
+#include "src/__support/GPU/utils.h"
 #include "src/__support/macros/attributes.h"
 #include "src/__support/macros/properties/architectures.h"
 
 namespace __llvm_libc {
 namespace rpc {
 
+/// Maximum amount of data a single lane can use.
+constexpr uint64_t MAX_LANE_SIZE = 64;
+
 /// Suspend the thread briefly to assist the thread scheduler during busy loops.
 LIBC_INLINE void sleep_briefly() {
 #if defined(LIBC_TARGET_ARCH_IS_NVPTX) && __CUDA_ARCH__ >= 700
@@ -26,6 +30,25 @@
 #endif
 }
 
+/// Get the first active thread inside the lane.
+LIBC_INLINE uint64_t get_first_lane_id(uint64_t lane_mask) {
+  return __builtin_ffsl(lane_mask) - 1;
+}
+
+/// Conditional that is only true for a single thread in a lane.
+LIBC_INLINE bool is_first_lane(uint64_t lane_mask) {
+  return gpu::get_lane_id() == get_first_lane_id(lane_mask);
+}
+
+/// Conditional to indicate if this process is running on the GPU.
+LIBC_INLINE constexpr bool is_process_gpu() {
+#if defined(LIBC_TARGET_ARCH_IS_GPU)
+  return true;
+#else
+  return false;
+#endif
+}
+
 } // namespace rpc
 } // namespace __llvm_libc