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First working version of the GPU GPS tracking block (it requires NVIDIA

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CUDA
3.0 GPU hardware)
This commit is contained in:
Javier Arribas
2015-07-24 17:21:25 +02:00
parent f722f5f8f7
commit 26cf90cdd4
12 changed files with 631 additions and 36 deletions
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3
src/algorithms/tracking/gnuradio_blocks/CMakeLists.txt
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@@ -57,7 +57,8 @@ endif(ENABLE_GENERIC_ARCH)
file(GLOB TRACKING_GR_BLOCKS_HEADERS "*.h")
add_library(tracking_gr_blocks ${TRACKING_GR_BLOCKS_SOURCES} ${TRACKING_GR_BLOCKS_HEADERS})
source_group(Headers FILES ${TRACKING_GR_BLOCKS_HEADERS})
target_link_libraries(tracking_gr_blocks tracking_lib ${GNURADIO_RUNTIME_LIBRARIES} gnss_sp_libs ${Boost_LIBRARIES} ${VOLK_GNSSSDR_LIBRARIES} ${ORC_LIBRARIES} )
target_link_libraries(tracking_gr_blocks tracking_lib ${GNURADIO_RUNTIME_LIBRARIES} gnss_sp_libs ${Boost_LIBRARIES} ${VOLK_GNSSSDR_LIBRARIES} ${ORC_LIBRARIES} ${CUDA_LIBRARIES})
if(NOT VOLK_GNSSSDR_FOUND)
add_dependencies(tracking_gr_blocks volk_gnsssdr_module)
endif(NOT VOLK_GNSSSDR_FOUND)

20
src/algorithms/tracking/gnuradio_blocks/gps_l1_ca_dll_pll_tracking_gpu_cc.cc
View File

@@ -48,17 +48,11 @@
#include "GPS_L1_CA.h"
#include "control_message_factory.h"
#include <volk/volk.h> //volk_alignement
#include <cuda.h>
// CUDA runtime
#include <cuda_runtime.h>
// includes
#include <cuda_profiler_api.h>
#include <helper_functions.h> // helper for shared functions common to CUDA Samples
#include <helper_cuda.h> // helper functions for CUDA error checking and initialization
/*!
* \todo Include in definition header file
*/
@@ -130,8 +124,9 @@ Gps_L1_Ca_Dll_Pll_Tracking_GPU_cc::Gps_L1_Ca_Dll_Pll_Tracking_GPU_cc(
multicorrelator_gpu = new cuda_multicorrelator();
// Get space for the resampled early / prompt / late local replicas
int N_CORRELATORS=3;
multicorrelator_gpu->init_cuda(0, NULL, 2 * d_vector_length , 2 * d_vector_length , N_CORRELATORS);
// Get space for the resampled early / prompt / late local replicas
checkCudaErrors(cudaHostAlloc((void**)&d_local_code_shift_samples, N_CORRELATORS * sizeof(int), cudaHostAllocMapped ));
@@ -323,9 +318,6 @@ Gps_L1_Ca_Dll_Pll_Tracking_GPU_cc::~Gps_L1_Ca_Dll_Pll_Tracking_GPU_cc()
multicorrelator_gpu->free_cuda();
delete(multicorrelator_gpu);
volk_free(d_Early);
volk_free(d_Prompt);
volk_free(d_Late);
volk_free(d_ca_code);
delete[] d_Prompt_buffer;
@@ -381,18 +373,20 @@ int Gps_L1_Ca_Dll_Pll_Tracking_GPU_cc::general_work (int noutput_items, gr_vecto
// UPDATE NCO COMMAND
float phase_step_rad = static_cast<float>(GPS_TWO_PI) * d_carrier_doppler_hz / static_cast<float>(d_fs_in);
//std::cout<<"d_current_prn_length_samples="<<d_current_prn_length_samples<<std::endl;
// perform carrier wipe-off and compute Early, Prompt and Late correlation
cudaProfilerStart();
multicorrelator_gpu->Carrier_wipeoff_multicorrelator_cuda(
d_corr_outs_gpu,
in,//in_gpu,
in,
d_local_codes_gpu,
d_rem_carr_phase_rad,
phase_step_rad,
d_local_code_shift_samples,
d_current_prn_length_samples,
3);
cudaProfilerStop();
//std::cout<<"d_Prompt="<<*d_Prompt<<"d_Early="<<*d_Early<<"d_Late="<<*d_Late<<std::endl;
// check for samples consistency (this should be done before in the receiver / here only if the source is a file)
if (std::isnan((*d_Prompt).real()) == true or std::isnan((*d_Prompt).imag()) == true ) // or std::isinf(in[i].real())==true or std::isinf(in[i].imag())==true)
{