Profiler - Remove rocprofiler-v1 remnants

Also force unset HSA_TOOLS_LIB so it doesn't break rocprofiler-sdk

Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>

README.md

@@ -578,34 +578,6 @@ The RAS plugin enables monitoring and counting of ECC (Error-Correcting Code) er
 >
 >#### 🐍 dmon RocProfiler Fields Return Zeros
 >
->**Solution:**
->
->Set the `HSA_TOOLS_LIB` environment variable **before** running a compute job.
->
->```bash
->export HSA_TOOLS_LIB=/opt/rocm/lib/librocprofiler64.so.1
->```
->
->**Example:**
->
->```bash
-># Terminal 1
->rdcd -u
->
-># Terminal 2
->export HSA_TOOLS_LIB=/opt/rocm/lib/librocprofiler64.so.1
->gpu-burn
->
-># Terminal 3
->rdci dmon -u -e 800,801 -i 0 -c 1
->
-># Output:
->GPU   OCCUPANCY_PERCENT   ACTIVE_WAVES
->0     001.000             32640.000
->```
->
->#### ⚠️ `HSA_STATUS_ERROR_OUT_OF_RESOURCES`
->
 >**Error Message:**
 >
 >```

docs/how-to/using_RDC.rst

@@ -309,34 +309,6 @@ Known issues
     - Limited metrics on MI200.
     - Consumer GPUs such as RX6800 have fewer supported metrics.
 
-- dmon RocProfiler fields return zeros
-
-  **Solution:**
-
-  Set the ``HSA_TOOLS_LIB`` environment variable before running a compute job.
-
-  .. code-block:: shell
-
-    export HSA_TOOLS_LIB=/opt/rocm/lib/librocprofiler64.so.1
-
-  **Example:**
-
-  .. code-block:: shell
-
-    # Terminal 1
-    rdcd -u
-
-    # Terminal 2
-    export HSA_TOOLS_LIB=/opt/rocm/lib/librocprofiler64.so.1
-    gpu-burn
-
-    # Terminal 3
-    rdci dmon -u -e 800,801 -i 0 -c 1
-
-    # Output:
-    GPU   OCCUPANCY_PERCENT   ACTIVE_WAVES
-    0     001.000             32640.000
-
 - HSA_STATUS_ERROR_OUT_OF_RESOURCES
 
   **Error message:**

include/rdc_lib/impl/RdcRocpLib.h

@@ -60,13 +60,12 @@ class RdcRocpLib : public RdcTelemetry {
   rdc_status_t (*rdc_module_init_)(uint64_t);
   rdc_status_t (*rdc_module_destroy_)();
   /**
-   * @brief Extract current ROCM_PATH from library or the environment
+   * @brief Make sure HSA_TOOLS_LIB is not set as it breaks rocprofiler-sdk
+   * @details
+   * Rocprofilerv1 needed HSA_TOOLS_LIB set to librocprofiler64.so.1.
+   * That breaks rocprofiler-sdk because it tries to load both v1 and sdk libraries.
    */
-  std::string get_rocm_path();
-  /**
-   * @brief Set ROCP_METRICS environment variable needed by rocprofiler
-   */
-  rdc_status_t set_rocprofiler_path();
+  void rdc_unset_hsa_tools_lib();
 };
 
 using RdcRocpLibPtr = std::shared_ptr<RdcRocpLib>;

rdc_libs/rdc/src/RdcRocpLib.cc

@@ -27,6 +27,7 @@ THE SOFTWARE.
 #include <fstream>
 #include <string>
 
+#include "rdc/rdc.h"
 #include "rdc_lib/RdcException.h"
 #include "rdc_lib/RdcTelemetryLibInterface.h"
 
@@ -41,14 +42,10 @@ RdcRocpLib::RdcRocpLib()
       telemetry_fields_unwatch_(nullptr),
       rdc_module_init_(nullptr),
       rdc_module_destroy_(nullptr) {
-  rdc_status_t status = set_rocprofiler_path();
-  if (status != RDC_ST_OK) {
-    RDC_LOG(RDC_ERROR, "Rocp related function will not work.");
-    throw RdcException(RDC_ST_FAIL_LOAD_MODULE, "rocprofiler path could not be set");
-    return;
-  }
+  // must happen before library is loaded
+  rdc_unset_hsa_tools_lib();
 
-  status = lib_loader_.load("librdc_rocp.so");
+  rdc_status_t status = lib_loader_.load("librdc_rocp.so");
   if (status != RDC_ST_OK) {
     RDC_LOG(RDC_ERROR, "Rocp related function will not work.");
     return;
@@ -152,68 +149,11 @@ rdc_status_t RdcRocpLib::rdc_telemetry_fields_unwatch(rdc_gpu_field_t* fields,
   return telemetry_fields_unwatch_(fields, fields_count);
 }
 
-std::string RdcRocpLib::get_rocm_path() {
-  // set default rocm path in case lookup fails
-  std::string rocm_path(ROCM_DIR);
-  const char* rocm_path_env = getenv("ROCM_PATH");
-  if (rocm_path_env != nullptr) {
-    rocm_path = rocm_path_env;
+void RdcRocpLib::rdc_unset_hsa_tools_lib() {
+  int status = unsetenv("HSA_TOOLS_LIB");
+  if (status != 0) {
+    RDC_LOG(RDC_ERROR, "Failed to unset HSA_TOOLS_LIB environment variable.");
   }
-
-  std::ifstream file("/proc/self/maps");
-
-  if (!file.is_open()) {
-    return rocm_path;
-  }
-
-  std::string line;
-  while (getline(file, line)) {
-    size_t index_end = line.find("librocprofiler-register.so");
-    size_t index_start = index_end;
-    if (index_end == std::string::npos) {
-      // no library on this line
-      continue;
-    }
-    // walk index backwards until it reaches a space
-    while ((index_start > 0) && (line[index_start - 1] != ' ')) {
-      index_start--;
-    }
-    // extract library path, drop library name
-    rocm_path = line.substr(index_start, index_end - index_start);
-    // appending "../" should result in "/opt/rocm/lib/.." or similar
-    rocm_path += "..";
-    return rocm_path;
-  }
-
-  return rocm_path;
-}
-
-rdc_status_t RdcRocpLib::set_rocprofiler_path() {
-  // rocprofiler requires ROCPROFILER_METRICS_PATH to be set
-  std::string rocprofiler_metrics_path = get_rocm_path() + "/share/rocprofiler-sdk/";
-
-  // set rocm prefix
-  int result = setenv("ROCPROFILER_METRICS_PATH", rocprofiler_metrics_path.c_str(), 0);
-  if (result != 0) {
-    RDC_LOG(RDC_ERROR, "setenv ROCPROFILER_METRICS_PATH failed! " << result);
-    return RDC_ST_PERM_ERROR;
-  }
-
-  // check that env exists
-  const char* rocprofiler_metrics_env = getenv("ROCPROFILER_METRICS_PATH");
-  if (rocprofiler_metrics_env == nullptr) {
-    RDC_LOG(RDC_ERROR, "ROCPROFILER_METRICS_PATH is not set!");
-    return RDC_ST_NO_DATA;
-  }
-
-  // check that file can be accessed
-  std::ifstream test_file(rocprofiler_metrics_env);
-  if (!test_file.good()) {
-    RDC_LOG(RDC_ERROR, "failed to open ROCPROFILER_METRICS_PATH: " << rocprofiler_metrics_env);
-    return RDC_ST_FILE_ERROR;
-  }
-
-  return RDC_ST_OK;
 }
 
 }  // namespace rdc