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optimizations

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This commit is contained in:
chudov
2009-09-14 08:39:28 +00:00
parent 117d1d5e3d
commit fa4b1ef15d
2 changed files with 89 additions and 95 deletions
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26
CUETools.FlaCuda/flacuda.cu
View File

@@ -105,12 +105,12 @@ extern "C" __global__ void cudaComputeLPC(
{
__shared__ struct {
computeAutocorTaskStruct task;
float ldr[32];
int bits[32];
float autoc[33];
float gen0[32];
float gen1[32];
float reff[32];
volatile float ldr[32];
volatile int bits[32];
volatile float autoc[33];
volatile float gen0[32];
volatile float gen1[32];
//volatile float reff[32];
int cbits;
} shared;
const int tid = threadIdx.x;
@@ -123,37 +123,31 @@ extern "C" __global__ void cudaComputeLPC(
if (tid <= max_order)
shared.autoc[tid] = 0.0f;
__syncthreads();
// add up parts
for (int part = 0; part < partCount; part++)
if (tid <= max_order)
shared.autoc[tid] += autoc[(blockIdx.y * partCount + part) * (max_order + 1) + tid];
__syncthreads();
if (tid < 32)
{
shared.gen0[tid] = shared.autoc[tid+1];
shared.gen1[tid] = shared.autoc[tid+1];
shared.ldr[tid] = 0.0f;
__syncthreads();
float error = shared.autoc[0];
for (int order = 0; order < max_order; order++)
{
// Schur recursion
float reff = -shared.gen1[0] / error;
if (tid == 0) shared.reff[order] = reff;
//if (tid == 0) shared.reff[order] = reff;
error += shared.gen1[0] * reff;
if (tid < max_order - order - 1)
if (tid < max_order - 1 - order)
{
float g1 = shared.gen1[tid + 1] + shared.reff[order] * shared.gen0[tid];
float g0 = shared.gen1[tid + 1] * shared.reff[order] + shared.gen0[tid];
float g1 = shared.gen1[tid + 1] + reff * shared.gen0[tid];
float g0 = shared.gen1[tid + 1] * reff + shared.gen0[tid];
shared.gen1[tid] = g1;
shared.gen0[tid] = g0;
}
__syncthreads();
// Levinson-Durbin recursion
shared.ldr[tid] += (tid < order) * reff * shared.ldr[order - 1 - tid] + (tid == order) * reff;

158
CUETools.FlaCuda/flacuda.cubin
View File

@@ -278,9 +278,9 @@ code {
code {
name = cudaComputeLPC
lmem = 0
smem = 828
smem = 700
reg = 10
bar = 1
bar = 0
const {
segname = const
segnum = 1
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}
}
code {