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ggml-rpc: add native RDMA transport for RPC backend (RoCEv2) #20590

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Merged
rgerganov merged 1 commit into from
Apr 15, 2026
+607 −38
Merged

ggml-rpc: add native RDMA transport for RPC backend (RoCEv2) #20590

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6 changes: 3 additions & 3 deletions ggml/include/ggml-rpc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -6,9 +6,9 @@
extern "C" {
#endif

#define RPC_PROTO_MAJOR_VERSION 3
#define RPC_PROTO_MINOR_VERSION 6
#define RPC_PROTO_PATCH_VERSION 1
#define RPC_PROTO_MAJOR_VERSION 4
#define RPC_PROTO_MINOR_VERSION 0
#define RPC_PROTO_PATCH_VERSION 0

#ifdef __cplusplus
static_assert(GGML_OP_COUNT == 96, "GGML_OP_COUNT has changed - update RPC_PROTO_PATCH_VERSION");
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23 changes: 23 additions & 0 deletions ggml/src/ggml-rpc/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -7,3 +7,26 @@ ggml_add_backend_library(ggml-rpc
if (WIN32)
target_link_libraries(ggml-rpc PRIVATE ws2_32)
endif()

# RDMA auto-detection (Linux only, requires libibverbs)
if (NOT WIN32 AND NOT APPLE)
find_library(IBVERBS_LIB ibverbs)
if (IBVERBS_LIB)
option(GGML_RPC_RDMA "ggml: enable RDMA transport for RPC" ON)
else()
option(GGML_RPC_RDMA "ggml: enable RDMA transport for RPC" OFF)
endif()
else()
set(GGML_RPC_RDMA OFF CACHE BOOL "RDMA not available on this platform" FORCE)
endif()

if (GGML_RPC_RDMA)
if (NOT IBVERBS_LIB)
find_library(IBVERBS_LIB ibverbs REQUIRED)
endif()
target_compile_definitions(ggml-rpc PRIVATE GGML_RPC_RDMA)
target_link_libraries(ggml-rpc PRIVATE ${IBVERBS_LIB})
message(STATUS " RDMA transport enabled (auto-detected)")
else()
message(STATUS " RDMA transport disabled")
endif()
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