[SYCLomatic] Fix a bug that the result of get_max_clock_frequency is in MHz while should be in kHz (#828)

cudaDeviceProp::clockRate is in kHz while the result of sycl::device::get_info<sycl::info::device::max_clock_frequency> is in MHz.
Multiplying with a thousand in helper function to fix the gap.

Signed-off-by: Ni, Wenhui <[email protected]>

Author: wenhuiNi

clang/runtime/dpct-rt/include/device.hpp.inc

@@ -629,6 +629,7 @@ public:
 // Device|device_info_get_max_clock_frequency
 // DPCT_DEPENDENCY_END
 // DPCT_CODE
+  /// Return the maximum clock frequency of this device in KHz.
   int get_max_clock_frequency() const {
     return get_device_info().get_max_clock_frequency();
   }
@@ -785,7 +786,7 @@ public:
         this->has(sycl::aspect::usm_host_allocations));
 
     prop.set_max_clock_frequency(
-        get_info<sycl::info::device::max_clock_frequency>());
+        get_info<sycl::info::device::max_clock_frequency>() * 1000);
 
     prop.set_max_compute_units(
         get_info<sycl::info::device::max_compute_units>());

clang/test/dpct/helper_files_ref/include/device.hpp

@@ -252,6 +252,7 @@ class device_ext : public sycl::device {
     return get_device_info().get_max_compute_units();
   }
 
+  /// Return the maximum clock frequency of this device in KHz.
   int get_max_clock_frequency() const {
     return get_device_info().get_max_clock_frequency();
   }
@@ -322,7 +323,7 @@ class device_ext : public sycl::device {
         this->has(sycl::aspect::usm_host_allocations));
 
     prop.set_max_clock_frequency(
-        get_info<sycl::info::device::max_clock_frequency>());
+        get_info<sycl::info::device::max_clock_frequency>() * 1000);
 
     prop.set_max_compute_units(
         get_info<sycl::info::device::max_compute_units>());