diff --git a/hipamd/CMakeLists.txt b/hipamd/CMakeLists.txt
index 8958eaa090..59d3507c20 100644
--- a/hipamd/CMakeLists.txt
+++ b/hipamd/CMakeLists.txt
@@ -142,6 +142,16 @@ if(NOT DEFINED COMPILE_HIP_ATP_MARKER)
 endif()
 add_to_config(_buildInfo COMPILE_HIP_ATP_MARKER)
 
+# Check if we need to force finegrained system memory allocation
+if(NOT DEFINED HIP_COHERENT_HOST_ALLOC)
+    if(NOT DEFINED ENV{HIP_COHERENT_HOST_ALLOC})
+        set(HIP_COHERENT_HOST_ALLOC 0)
+    else()
+        set(HIP_COHERENT_HOST_ALLOC $ENV{HIP_COHERENT_HOST_ALLOC})
+    endif()
+endif()
+add_to_config(_buildInfo HIP_COHERENT_HOST_ALLOC)
+
 #############################
 # Build steps
 #############################
diff --git a/hipamd/src/hip_hcc.h b/hipamd/src/hip_hcc.h
index 4ebf002a58..f18d68473d 100644
--- a/hipamd/src/hip_hcc.h
+++ b/hipamd/src/hip_hcc.h
@@ -75,7 +75,7 @@ private:
     int      _shortTid;
 
     // monotonically increasing API sequence number for this threa.
-    uint64_t _apiSeqNum; 
+    uint64_t _apiSeqNum;
 };
 
 struct ProfTrigger {
@@ -155,6 +155,12 @@ extern const char *API_COLOR_END;
 #endif
 
 
+// Compile code that force hipHostMalloc only allocates finegrained system memory.
+#ifndef HIP_COHERENT_HOST_ALLOC
+#define HIP_COHERENT_HOST_ALLOC 0
+#endif
+
+
 
 // Compile support for trace markers that are displayed on CodeXL GUI at start/stop of each function boundary.
 // TODO - currently we print the trace message at the beginning. if we waited, we could also include return codes, and any values returned
@@ -169,8 +175,8 @@ extern const char *API_COLOR_END;
 // Swallow scoped markers:
 #define MARKER_BEGIN(markerName,group)
 #define MARKER_END()
-#define RESUME_PROFILING 
-#define STOP_PROFILING   
+#define RESUME_PROFILING
+#define STOP_PROFILING
 #endif
 
 
@@ -246,7 +252,7 @@ static const DbName dbName [] =
     {KRED, "signal"},
 };
 
- 
+
 
 #if COMPILE_HIP_DB
 #define tprintf(trace_level, ...) {\
@@ -467,7 +473,7 @@ public:
     void launchModuleKernel(hc::accelerator_view av, hsa_signal_t signal,
                             uint32_t blockDimX, uint32_t blockDimY, uint32_t blockDimZ,
                             uint32_t gridDimX, uint32_t gridDimY, uint32_t gridDimZ,
-														uint32_t groupSegmentSize, uint32_t sharedMemBytes, 
+														uint32_t groupSegmentSize, uint32_t sharedMemBytes,
 														void *kernarg, size_t kernSize, uint64_t kernel);
 
 
@@ -490,7 +496,7 @@ private:
 
     // The unsigned return is hipMemcpyKind
     unsigned resolveMemcpyDirection(bool srcInDeviceMem, bool dstInDeviceMem);
-    void resolveHcMemcpyDirection(unsigned hipMemKind, const hc::AmPointerInfo *dstPtrInfo, const hc::AmPointerInfo *srcPtrInfo, 
+    void resolveHcMemcpyDirection(unsigned hipMemKind, const hc::AmPointerInfo *dstPtrInfo, const hc::AmPointerInfo *srcPtrInfo,
                                   hc::hcCommandKind *hcCopyDir, bool *forceHostCopyEngine);
 
     bool canSeePeerMemory(const ihipCtx_t *thisCtx, const hc::AmPointerInfo *dstInfo, const hc::AmPointerInfo *srcInfo);
@@ -662,7 +668,7 @@ public: // Functions:
     // TODO - review uses of getWriteableDevice(), can these be converted to getDevice()
     ihipDevice_t *getWriteableDevice() const { return _device; };
 
-    std::string toString() const; 
+    std::string toString() const;
 
 public:  // Data
     // The NULL stream is used if no other stream is specified.
@@ -751,7 +757,7 @@ inline std::ostream& operator<<(std::ostream& os, const hipEvent_t& e)
 
 inline std::ostream& operator<<(std::ostream& os, const ihipCtx_t* c)
 {
-    os << "ctx:" << static_cast<const void*> (c) 
+    os << "ctx:" << static_cast<const void*> (c)
        << ".dev:" << c->getDevice()->_deviceId;
     return os;
 }
diff --git a/hipamd/src/hip_memory.cpp b/hipamd/src/hip_memory.cpp
index e59e6c261d..ee05c6b00a 100644
--- a/hipamd/src/hip_memory.cpp
+++ b/hipamd/src/hip_memory.cpp
@@ -126,7 +126,7 @@ hipError_t hipMalloc(void** ptr, size_t sizeBytes)
             int peerCnt=0;
             {
                 LockedAccessor_CtxCrit_t crit(ctx->criticalData());
-                // the peerCnt always stores self so make sure the trace actually 
+                // the peerCnt always stores self so make sure the trace actually
                 peerCnt = crit->peerCnt();
                 if (peerCnt > 1) {
                     hsa_amd_agents_allow_access(crit->peerCnt(), crit->peerAgents(), NULL, *ptr);
@@ -154,8 +154,8 @@ hipError_t hipHostMalloc(void** ptr, size_t sizeBytes, unsigned int flags)
     if(ctx){
         // am_alloc requires writeable __acc, perhaps could be refactored?
         auto device = ctx->getWriteableDevice();
-        // If HIP_COHERENT_HOST_ALLOC is defined, we always alloc coherent host system memroy 
-    #ifdef HIP_COHERENT_HOST_ALLOC
+        // If HIP_COHERENT_HOST_ALLOC is defined, we always alloc coherent host system memroy
+#if HIP_COHERENT_HOST_ALLOC
         *ptr = hc::am_alloc(sizeBytes, device->_acc, amHostPinned);
         if(sizeBytes < 1 && (*ptr == NULL)){
             hip_status = hipErrorMemoryAllocation;
@@ -163,7 +163,7 @@ hipError_t hipHostMalloc(void** ptr, size_t sizeBytes, unsigned int flags)
             hc::am_memtracker_update(*ptr, device->_deviceId, amHostCoherent);
         }
         tprintf(DB_MEM, " %s: pinned ptr=%p\n", __func__, *ptr);
-    #else
+#else
         if((flags == hipHostMallocDefault)|| (flags == hipHostMallocPortable)){
             *ptr = hc::am_alloc(sizeBytes, device->_acc, amHostPinned);
             if (sizeBytes < 1 && (*ptr == NULL)) {
@@ -189,7 +189,7 @@ hipError_t hipHostMalloc(void** ptr, size_t sizeBytes, unsigned int flags)
                 tprintf(DB_MEM, "allocated pinned host ptr=%p on dev=%d, allow access to %d peer(s)\n", *ptr, device->_deviceId, peerCnt);
             }
         }
-    #endif //HIP_COHERENT_HOST_ALLOC
+#endif //HIP_COHERENT_HOST_ALLOC
     }
     return ihipLogStatus(hip_status);
 }