From 691c57ea8596da35da3ce90a7b58796f3791036c Mon Sep 17 00:00:00 2001
From: tgrogers <tgrogers@purdue.edu>
Date: Sat, 30 Jun 2018 10:12:20 -0400
Subject: changing the flow s.t. you cannot compile the simulator with a
 different version of CUDA from the app.

---
 libcuda/cuda_runtime_api.cc | 69 ++++++++++++++++++++++-----------------------
 1 file changed, 33 insertions(+), 36 deletions(-)

(limited to 'libcuda/cuda_runtime_api.cc')

diff --git a/libcuda/cuda_runtime_api.cc b/libcuda/cuda_runtime_api.cc
index 5964a4d..53436d3 100644
--- a/libcuda/cuda_runtime_api.cc
+++ b/libcuda/cuda_runtime_api.cc
@@ -182,6 +182,8 @@ cudaError_t g_last_cudaError = cudaSuccess;
 
 extern stream_manager *g_stream_manager;
 
+
+
 void register_ptx_function( const char *name, function_info *impl )
 {
 	// no longer need this
@@ -1341,6 +1343,29 @@ std::string get_app_binary(){
    return self_exe_path; 
 }
 
+static int get_app_cuda_version() {
+    int app_cuda_version = 0;
+    char fname[1024];
+    snprintf(fname,1024,"_app_cuda_version_XXXXXX");
+    int fd=mkstemp(fname);
+    close(fd);
+    std::string app_cuda_version_command = "ldd " + get_app_binary() + " | grep libcudart.so | sed  's/.*libcudart.so.\\(.*\\) =>.*/\\1/' > " + fname;
+    system(app_cuda_version_command.c_str());
+    FILE * cmd = fopen(fname, "r");
+    char buf[256];
+    while (fgets(buf, sizeof(buf), cmd) != 0) {
+        std::cout << buf;
+        app_cuda_version = atoi(buf);
+    }
+    fclose(cmd);
+    if ( app_cuda_version == 0 ) {
+        printf( "Error - Cannot detect the app's CUDA version.\n" );
+        exit(1);
+    }
+    return app_cuda_version;
+}
+
+
 //! Call cuobjdump to extract everything (-elf -sass -ptx)
 /*!
  *	This Function extract the whole PTX (for all the files) using cuobjdump
@@ -1366,23 +1391,10 @@ void extract_code_using_cuobjdump(){
 	// Running cuobjdump using dynamic link to current process
 	// Needs the option '-all' to extract PTX from CDP-enabled binary 
 	extern bool g_cdp_enabled;
-    const int current_cuda = atoi(getenv("CUDA_VERSION_NUMBER"));
-    if ( context->get_device()->get_gpgpu()->get_config().convert_to_ptxplus() && current_cuda > 4020 ) {
-        const char* cuda_42_path = getenv("CUDA_42_INSTALL_PATH");
-        if ( NULL == cuda_42_path ) {
-            printf("You are using a new version of CUDA and PTXPLUS. You are required to have CUDA SDK 4.2 and explicitly "
-                   "point to it via the environment variable $CUDA_42_INSTALL_PATH.\n\n");
-            exit(1);
-        } else {
-            command = "$CUDA_42_INSTALL_PATH/bin/cuobjdump";
-        }
-    } else {
-        command = "$CUDA_42_INSTALL_PATH/bin/cuobjdump";
-    }
 	if(!g_cdp_enabled)
-        command += " -ptx -elf -sass " + app_binary + " > " + fname;
+        command = "$CUDA_INSTALL_PATH/bin/cuobjdump -ptx -elf -sass " + app_binary + " > " + fname;
 	else
-        command += " -ptx -elf -sass -all " + app_binary + " > " + fname;
+        command = "$CUDA_INSTALL_PATH/bin/cuobjdump -ptx -elf -sass -all " + app_binary + " > " + fname;
 	bool parse_output = true; 
 	int result = system(command.c_str());
 	if(result) {
@@ -1765,6 +1777,7 @@ void cuobjdumpParseBinary(unsigned int handle){
     //TODO: Remove temporarily files as per configurations
 }
 
+
 void** CUDARTAPI __cudaRegisterFatBinary( void *fatCubin )
 {
 #if (CUDART_VERSION < 2010)
@@ -1783,26 +1796,10 @@ void** CUDARTAPI __cudaRegisterFatBinary( void *fatCubin )
         // Making this a runtime variable based on the app, enables GPGPU-Sim compiled
         // with a newer version of CUDA to run apps compiled with older versions of
         // CUDA. This is especially useful for PTXPLUS execution.
-        char fname[1024];
-        snprintf(fname,1024,"_app_cuda_version_XXXXXX");
-        int fd=mkstemp(fname);
-        close(fd);
-        int app_cuda_version = 0;
-        std::string app_cuda_version_command = "ldd " + get_app_binary() + " | grep libcudart.so | sed  's/.*libcudart.so.\\(.*\\) =>.*/\\1/' > " + fname;
-        system(app_cuda_version_command.c_str());
-        FILE * cmd = fopen(fname, "r");
-        char buf[256];
-        while (fgets(buf, sizeof(buf), cmd) != 0) {
-            std::cout << buf;
-            app_cuda_version = atoi(buf);
-        }
-        fclose(cmd);
-        if ( app_cuda_version == 0 ) {
-            printf( "Error - Cannot detect the app's CUDA version.\n" );
-            exit(1);
-        }
+        int app_cuda_version = get_app_cuda_version();
+        assert( app_cuda_version == CUDART_VERSION / 1000  && "The app must be compiled with same major version as the simulator." );
         const char* filename;
-        if ( app_cuda_version < 6 ) {
+#if CUDART_VERSION < 6000
             // FatBin handle from the .fatbin.c file (one of the intermediate files generated by NVCC)
             typedef struct {int m; int v; const unsigned long long* d; char* f;} __fatDeviceText __attribute__ ((aligned (8))); 
             __fatDeviceText * fatDeviceText = (__fatDeviceText *) fatCubin;
@@ -1814,9 +1811,9 @@ void** CUDARTAPI __cudaRegisterFatBinary( void *fatCubin )
             char * pfatbin = (char*) fatDeviceText->d; 
             int offset = *((int*)(pfatbin+48)); 
             filename = (pfatbin+16+offset);
-        } else {
+#else
             filename = "default";
-        }
+#endif
 
 		// The extracted file name is associated with a fat_cubin_handle passed
 		// into cudaLaunch().  Inside cudaLaunch(), the associated file name is
-- 
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