microsoft · hariharans29 · Jan 17, 2026 · Dec 22, 2025 · Jan 12, 2026 · Jan 12, 2026
diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
@@ -91,6 +91,7 @@ option(onnxruntime_USE_SVE "Build with SVE support in MLAS" OFF)
 option(onnxruntime_USE_ARM_NEON_NCHWC "Build with ARM Neon NCHWc kernels in MLAS" OFF)
 
 option(onnxruntime_USE_KLEIDIAI "Build with KleidiAI integration in MLAS" OFF)
+option(onnxruntime_USE_QMX_KLEIDIAI_COEXIST "Build with QMX and Arm KLEIDIAI libraries" OFF)
 option(onnxruntime_BUILD_UNIT_TESTS "Build ONNXRuntime unit tests" ON)
 option(onnxruntime_BUILD_CSHARP "Build C# library" OFF)
 option(onnxruntime_BUILD_OBJC "Build Objective-C library" OFF)

diff --git a/cmake/deps.txt b/cmake/deps.txt
@@ -57,4 +57,7 @@ directx_headers;https://github.com/microsoft/DirectX-Headers/archive/refs/tags/v
 cudnn_frontend;https://github.com/NVIDIA/cudnn-frontend/archive/refs/tags/v1.12.0.zip;7e733cfdc410d777b76122d64232499205589a96
 dawn;https://github.com/google/dawn/archive/13c1635a14574ebb7116b56a69f5519301417fda.zip;0aadd28fc385cf7d657d5fc70a352372d2d3c76a
 kleidiai;https://github.com/ARM-software/kleidiai/archive/refs/tags/v1.15.0.tar.gz;62ccd24ab60bcef68766440fb42d79071ac2a5d2
+# kleidiai-qmx is pinned to a specific commit as there are no tagged releases. When an appropriate tagged release becomes available,
+# this entry will be updated to use refs/tags/<version> instead of the raw commit hash.
+kleidiai-qmx;https://github.com/qualcomm/kleidiai/archive/2f10c9a8d32f81ffeeb6d4885a29cc35d2b0da87.zip;5e855730a2d69057a569f43dd7532db3b2d2a05c
 duktape;https://github.com/svaarala/duktape/releases/download/v2.7.0/duktape-2.7.0.tar.xz;8200c8e417dbab7adcc12c4dbdef7651cfc55794
diff --git a/cmake/external/onnxruntime_external_deps.cmake b/cmake/external/onnxruntime_external_deps.cmake
@@ -845,6 +845,12 @@ if(onnxruntime_USE_KLEIDIAI)
 
   onnxruntime_fetchcontent_declare(kleidiai URL ${DEP_URL_kleidiai} URL_HASH SHA1=${DEP_SHA1_kleidiai} EXCLUDE_FROM_ALL)
   onnxruntime_fetchcontent_makeavailable(kleidiai)
+  # Fetch Qualcomm's kleidiai library
+  if(onnxruntime_USE_QMX_KLEIDIAI_COEXIST)
+          onnxruntime_fetchcontent_declare(kleidiai-qmx URL ${DEP_URL_kleidiai-qmx} URL_HASH SHA1=${DEP_SHA1_kleidiai-qmx}
+                  EXCLUDE_FROM_ALL)
+          onnxruntime_fetchcontent_makeavailable(kleidiai-qmx)
+  endif()
 endif()
 
 set(onnxruntime_LINK_DIRS)

diff --git a/cmake/onnxruntime_mlas.cmake b/cmake/onnxruntime_mlas.cmake
@@ -284,6 +284,11 @@ function(setup_kleidiai)
   )
   target_link_libraries(onnxruntime_mlas PRIVATE kleidiai)
   list(APPEND onnxruntime_EXTERNAL_LIBRARIES kleidiai)
+  if(onnxruntime_USE_QMX_KLEIDIAI_COEXIST)
+          target_link_libraries(onnxruntime_mlas PRIVATE  kleidiai-qmx)
+          target_compile_definitions(onnxruntime_mlas PRIVATE ENABLE_QMX_KERNELS=1)
+          list(APPEND onnxruntime_EXTERNAL_LIBRARIES kleidiai-qmx)
+  endif()
   set(onnxruntime_EXTERNAL_LIBRARIES ${onnxruntime_EXTERNAL_LIBRARIES} PARENT_SCOPE)
 
   # If KLEIDIAI_DEBUG is enabled that implies both DEBUG and KERNEL messages.
@@ -302,6 +307,14 @@ function(setup_kleidiai)
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
     FRAMEWORK DESTINATION ${CMAKE_INSTALL_BINDIR})
   endif()
+
+  if(onnxruntime_USE_QMX_KLEIDIAI_COEXIST)
+    install(TARGETS kleidiai-qmx EXPORT ${PROJECT_NAME}Targets
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    FRAMEWORK DESTINATION ${CMAKE_INSTALL_BINDIR})
+  endif()
 endfunction()
 
 function (setup_arm_neon_nchwc)

diff --git a/onnxruntime/core/mlas/inc/mlas.h b/onnxruntime/core/mlas/inc/mlas.h
@@ -2115,14 +2115,3 @@ MlasFlashAttention(
     MlasFlashAttentionThreadedArgs* args,
     MLAS_THREADPOOL* ThreadPool
 );
-
-#if defined(USE_KLEIDIAI)
-/**
- * @brief Function to override the packing mechanism decision if kleidi ai is included
- * @param enable     enable kleidiai packing (allow or disallow depending on true/false)
- * @return
-*/
-void
-MLASCALL
-MlasGemmBatchPackUseKleidi(bool enable);
-#endif
diff --git a/onnxruntime/core/mlas/lib/kai_ukernel_interface.cpp b/onnxruntime/core/mlas/lib/kai_ukernel_interface.cpp
@@ -19,6 +19,9 @@
 #include "kai/ukernels/matmul/matmul_clamp_f32_f32_f32p/kai_matmul_clamp_f32_f32_f32p8x1biasf32_6x8x4_neon_mla.h"
 #include "kai/ukernels/matmul/matmul_clamp_f32_f32p_f32p/kai_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_sme2_mopa.h"
 #include "kai/ukernels/matmul/matmul_clamp_f32_f32p_f32p/kai_matmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_sme_mopa.h"
+#if defined(ENABLE_QMX_KERNELS)
+#include "kai/ukernels/matmul/matmul_clamp_f32_f32p_f32p/kai_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa.h"
+#endif // ENABLE_QMX_KERNELS
 
 const kai_matmul_clamp_f32_qai8dxp_qsi4c32p_ukernel kai_matmul_clamp_f32_qai8dxp1x4_qsi4c32p4x4_1x4_neon_dotprod =
     {kai_get_m_step_matmul_clamp_f32_qai8dxp1x4_qsi4c32p4x4_1x4_neon_dotprod,
@@ -122,6 +125,21 @@ const kai_matmul_clamp_f32_f32p_f32p_ukernel sgemm_gemm_sme2 =
     kai_get_dst_size_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_sme2_mopa,
     kai_run_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_sme2_mopa};
 
+#if defined(ENABLE_QMX_KERNELS)
+const kai_matmul_clamp_f32_f32p_f32p_ukernel sgemm_gemm_qmx =
+    {kai_get_m_step_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_n_step_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_mr_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_nr_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_kr_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_sr_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_lhs_packed_offset_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_rhs_packed_offset_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_dst_offset_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_get_dst_size_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa,
+    kai_run_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa};
+#endif // ENABLE_QMX_KERNELS
+
 const kai_matmul_clamp_f32_qai8dxp_qsi4c32p_ukernel& GetKleidiAIGemmUKernel() {
     if (MLAS_CPUIDINFO::GetCPUIDInfo().HasArmNeon_I8MM()) {
         return kai_matmul_clamp_f32_qai8dxp4x8_qsi4c32p4x8_16x4x32_neon_i8mm;
@@ -142,7 +160,17 @@ const kai_matmul_clamp_f32_f32p_f32p_ukernel& GetKleidiAISGemmUKernel() {
     if (MLAS_CPUIDINFO::GetCPUIDInfo().HasArm_SME2()) {
         return sgemm_gemm_sme2;
     } else {
+#if defined(ENABLE_QMX_KERNELS)
+        if (ArmKleidiAI::vendor_name.compare("Qualcomm") == 0)
+        {
+            KLEIDIAI_KERNEL_LOG("SGEMM: Using QMX Kernel");
+            return sgemm_gemm_qmx;
+        } else {
+            return sgemm_gemm_sme;
+        }
+#else
         return sgemm_gemm_sme;
+#endif // ENABLE_QMX_KERNELS
     }
 }
 

diff --git a/onnxruntime/core/mlas/lib/kleidiai/convolve_kleidiai.cpp b/onnxruntime/core/mlas/lib/kleidiai/convolve_kleidiai.cpp
@@ -16,6 +16,10 @@
 #include "kai/ukernels/matmul/imatmul_clamp_f32_f32p_f32p/kai_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_sme2_mopa.h"
 #include "kai/ukernels/matmul/pack/kai_lhs_imatmul_pack_x32p2vlx1_x32p_sme.h"
 #include "kai/ukernels/matmul/pack/kai_rhs_imatmul_pack_kxn_x32p2vlx1b_x32_x32_sme.h"
+#if defined(ENABLE_QMX_KERNELS)
+#include "kai/ukernels/matmul/imatmul_clamp_f32_f32p_f32p/kai_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_qmx_mopa.h"
+#endif // ENABLE_QMX_KERNELS
+
 
 // Right-hand-side (weights) cache key
 struct RhsCacheKey {
@@ -596,11 +600,29 @@ static void ConvolveSme(const size_t co, //channels out
                     -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
                 );
             } else {
-                KLEIDIAI_KERNEL_LOG("kai_run_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_sme_mopa" << " M=" << TileSizeM << " N=" << TileSizeN << " k_chunk_count=" << (d_kh * d_kw) << " k_chunk_length=" << ci);
-                kai_run_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_sme_mopa(
-                    TileSizeM, TileSizeN, d_kh * d_kw, ci, ATile, BTile, CTile, co * sizeof(float),
-                    -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
-                );
+                        #if defined(ENABLE_QMX_KERNELS)
+                            if (ArmKleidiAI::vendor_name.compare("Qualcomm") == 0)
+                            {
+                                KLEIDIAI_KERNEL_LOG("kai_run_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_qmx_mopa" << " M=" << TileSizeM << " N=" << TileSizeN << " k_chunk_count=" << (d_kh * d_kw) << " k_chunk_length=" << ci);
+                                kai_run_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_qmx_mopa(
+                                    TileSizeM, TileSizeN, d_kh * d_kw, ci, ATile, BTile, CTile, co * sizeof(float),
+                                    -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
+                                );
+                            }
+                            else {
+                                KLEIDIAI_KERNEL_LOG("kai_run_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_sme_mopa" << " M=" << TileSizeM << " N=" << TileSizeN << " k_chunk_count=" << (d_kh * d_kw) << " k_chunk_length=" << ci);
+                                kai_run_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_sme_mopa(
+                                    TileSizeM, TileSizeN, d_kh * d_kw, ci, ATile, BTile, CTile, co * sizeof(float),
+                                    -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
+                                );
+                            }
+                        #else
+                            KLEIDIAI_KERNEL_LOG("kai_run_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_sme_mopa" << " M=" << TileSizeM << " N=" << TileSizeN << " k_chunk_count=" << (d_kh * d_kw) << " k_chunk_length=" << ci);
+                            kai_run_imatmul_clamp_f32_f32p2vlx1_f32p2vlx1b_2vlx2vl_sme_mopa(
+                                TileSizeM, TileSizeN, d_kh * d_kw, ci, ATile, BTile, CTile, co * sizeof(float),
+                                -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
+                            );
+                        #endif // ENABLE_QMX_KERNELS
             }
         });
 

diff --git a/onnxruntime/core/mlas/lib/kleidiai/mlasi_kleidiai.h b/onnxruntime/core/mlas/lib/kleidiai/mlasi_kleidiai.h
@@ -53,6 +53,8 @@ namespace ArmKleidiAI {
 
 // By default we should try for SME2 first before falling back to SME.
 inline const bool UseSME2 = MLAS_CPUIDINFO::GetCPUIDInfo().HasArm_SME2();
+inline const bool UseSME = MLAS_CPUIDINFO::GetCPUIDInfo().HasArm_SME();
+inline const std::string_view vendor_name = MLAS_CPUIDINFO::GetCPUIDInfo().GetCPUVendor();
 
 // Buffer packing routines.
 //

diff --git a/onnxruntime/core/mlas/lib/kleidiai/qgemm_kleidiai.cpp b/onnxruntime/core/mlas/lib/kleidiai/qgemm_kleidiai.cpp
@@ -11,7 +11,11 @@
 #include "kai/ukernels/matmul/pack/kai_rhs_pack_kxn_qsi8cxp_qsi8cx_neon.h"
 
 #include "kai/ukernels/matmul/matmul_clamp_f32_qai8dxp_qsi8cxp/kai_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme2_mopa.h"
+#include "kai/ukernels/matmul/matmul_clamp_f32_qai8dxp_qsi8cxp/kai_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme_mopa.h"
 #include "kai/ukernels/matmul/matmul_clamp_f32_qai8dxp_qsi8cxp/kai_matmul_clamp_f32_qai8dxp1x4_qsi8cxp4vlx4_1x4vl_sme2_dot.h"
+#if defined(ENABLE_QMX_KERNELS)
+#include "kai/ukernels/matmul/matmul_clamp_f32_qai8dxp_qsi8cxp/kai_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_qmx_mopa.h"
+#endif // ENABLE_QMX_KERNELS
 
 #include "mlasi_kleidiai.h"
 
@@ -108,14 +112,53 @@ ArmKleidiAI::MlasDynamicQGemmBatch(
                             << " M="<< Shape.M << " K=" << Shape.K << " mr=" << mr << " kr=" << kr << " sr=" << sr << " m_idx_start=0");
         kai_run_lhs_quant_pack_qai8dxp_f32(Shape.M, Shape.K, mr, kr, sr, 0, DataParams->A,
                                            Shape.K*sizeof(float), lhs);
+        if (ArmKleidiAI::UseSME2)
+        {
+            KLEIDIAI_KERNEL_LOG("kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme2_mopa");
+            kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme2_mopa(
+                Shape.M, Shape.N, Shape.K, lhs, DataParams->PackedB,
+                DataParams->C,
+                Shape.N * sizeof(float),
+                sizeof(float),
+                -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
+            );
+        }
+        else {
+
+                #if defined(ENABLE_QMX_KERNELS)
+                    if (ArmKleidiAI::vendor_name.compare("Qualcomm") == 0)
+                    {
+                        KLEIDIAI_KERNEL_LOG("kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_qmx_mopa");
+                        kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_qmx_mopa(
+                            Shape.M, Shape.N, Shape.K, lhs, DataParams->PackedB,
+                            DataParams->C,
+                            Shape.N * sizeof(float),
+                            sizeof(float),
+                            -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
+                        );
+
+                    }
+                    else {
+                        KLEIDIAI_KERNEL_LOG("kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme_mopa");
+                        kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme_mopa(
+                            Shape.M, Shape.N, Shape.K, lhs, DataParams->PackedB,
+                            DataParams->C,
+                            Shape.N * sizeof(float),
+                            sizeof(float),
+                            -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
+                        );
+                    }
+                #else
+                        KLEIDIAI_KERNEL_LOG("kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme_mopa");
+                        kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme_mopa(
+                            Shape.M, Shape.N, Shape.K, lhs, DataParams->PackedB,
+                            DataParams->C,
+                            Shape.N * sizeof(float),
+                            sizeof(float),
+                            -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
+                        );
+                #endif // ENABLE_QMX_KERNELS
 
-        KLEIDIAI_KERNEL_LOG("kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme2_mopa");
-        kai_run_matmul_clamp_f32_qai8dxp1vlx4_qsi8cxp4vlx4_1vlx4vl_sme2_mopa(
-            Shape.M, Shape.N, Shape.K, lhs, DataParams->PackedB,
-            DataParams->C,
-            Shape.N * sizeof(float),
-            sizeof(float),
-            -std::numeric_limits<float>::max(), std::numeric_limits<float>::max()
-        );
+        }
     }
 }
diff --git a/onnxruntime/core/mlas/lib/kleidiai/sgemm_kleidiai.cpp b/onnxruntime/core/mlas/lib/kleidiai/sgemm_kleidiai.cpp
@@ -16,6 +16,9 @@
 #include "mlasi_kleidiai.h"
 #include "kai_ukernel_interface.h"
 
+#if defined(ENABLE_QMX_KERNELS)
+#include "kai/ukernels/matmul/matmul_clamp_f32_f32p_f32p/kai_matmul_clamp_f32_f32p2vlx1_f32p2vlx1biasf32_qmx_mopa.h"
+#endif // ENABLE_QMX_KERNELS
 
 // Thread-local reusable buffers to reduce allocation overhead across tiles.
 struct KaiTlsBuffers {
@@ -145,9 +148,9 @@ ArmKleidiAI::MlasGemvBatch(
         if (M != 1 && N != 1) {
             return false;
         }
-    
+
         const bool m_path = (M == 1);
-    
+
         // We cannot support cases where N == 1 and B is already packed.
         // When both are 1, we route through the M-path, so this naturally doesn't trigger.
         if (!m_path && Data->BIsPacked) {
@@ -165,15 +168,15 @@ ArmKleidiAI::MlasGemvBatch(
             // - M-path: LHS is A, stride = lda
             // - N-path: LHS is B, stride = ldb
             size_t lhs_ld = m_path ? Data[b].lda : Data[b].ldb;
-            
+
             const float* rhs_base = m_path ? static_cast<const float*>(Data[b].B)
                                            : static_cast<const float*>(Data[b].A);
-            const float* lhs_base = m_path ? static_cast<const float*>(Data[b].A) 
+            const float* lhs_base = m_path ? static_cast<const float*>(Data[b].A)
                                            : static_cast<const float*>(Data[b].B);
 
             // Prepare packed RHS if needed
             const void* rhs_packed_ptr = nullptr;
-            
+
             // The if branch can only be taken in cases where we are dealing with M == 1
             // We previously reject any prepacked B where N == 1
             // In cases where N == 1 we Pack A Matrix as the RHS using tb = CBlasTrans

diff --git a/onnxruntime/core/mlas/lib/qgemm.cpp b/onnxruntime/core/mlas/lib/qgemm.cpp
@@ -206,7 +206,7 @@ MLASCALL
 MlasIsDynamicQGemmAvailable()
 {
 #if defined(USE_KLEIDIAI)
-  return ArmKleidiAI::UseSME2;
+  return (ArmKleidiAI::UseSME2 || ArmKleidiAI::UseSME);
 #else
   return false;
 #endif

diff --git a/tools/ci_build/build.py b/tools/ci_build/build.py
@@ -896,6 +896,8 @@ def generate_build_tree(
 
     if not args.no_kleidiai:
         cmake_args += ["-Donnxruntime_USE_KLEIDIAI=ON"]
+        if args.use_qmx:
+            cmake_args += ["-Donnxruntime_USE_QMX_KLEIDIAI_COEXIST=ON"]
 
     if args.enable_arm_neon_nchwc:
         cmake_args += ["-Donnxruntime_USE_ARM_NEON_NCHWC=ON"]

diff --git a/tools/ci_build/build_args.py b/tools/ci_build/build_args.py
@@ -763,6 +763,12 @@ def add_execution_provider_args(parser: argparse.ArgumentParser) -> None:
         "--no_kleidiai", action="store_true", help="Disable KleidiAI integration (used with ACL/ArmNN)."
     )
 
+    # --- Qualcomm QMX Library ---
+    qmx_group = parser.add_argument_group("QMX kernel library")
+    qmx_group.add_argument(
+        "--use_qmx", action="store_true", help="Enable Qualcomm QMX kernel to coexist with Arm KleidiAI."
+    )
+
     # --- RKNPU ---
     rknpu_group = parser.add_argument_group("RKNPU Execution Provider")
     rknpu_group.add_argument("--use_rknpu", action="store_true", help="Enable RKNPU EP.")