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Reduce some register allocation in SCRYPT based kernels to improve speed on GPU with low resources

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This commit is contained in:
Jens Steube 2021-04-22 00:26:09 +02:00
parent c444b42290
commit 2b069a94fd
3 changed files with 58 additions and 36 deletions
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30
OpenCL/m08900-pure.cl
View File

@ -132,11 +132,11 @@ DECLSPEC void salsa_r (uint4 *TI)
uint4 R2 = TI[STATE_CNT4 - 2];
uint4 R3 = TI[STATE_CNT4 - 1];
uint4 TO[STATE_CNT4];
uint4 TT[STATE_CNT4 / 2];
int idx_y = 0;
int idx_r1 = 0;
int idx_r2 = SCRYPT_R * 4;
int idx_r2 = 0;
for (int i = 0; i < SCRYPT_R; i++)
{
@ -152,10 +152,10 @@ DECLSPEC void salsa_r (uint4 *TI)
SALSA20_8_XOR ();
TO[idx_r1++] = R0;
TO[idx_r1++] = R1;
TO[idx_r1++] = R2;
TO[idx_r1++] = R3;
TI[idx_r1++] = R0;
TI[idx_r1++] = R1;
TI[idx_r1++] = R2;
TI[idx_r1++] = R3;
Y0 = TI[idx_y++];
Y1 = TI[idx_y++];
@ -164,18 +164,24 @@ DECLSPEC void salsa_r (uint4 *TI)
SALSA20_8_XOR ();
TO[idx_r2++] = R0;
TO[idx_r2++] = R1;
TO[idx_r2++] = R2;
TO[idx_r2++] = R3;
TT[idx_r2++] = R0;
TT[idx_r2++] = R1;
TT[idx_r2++] = R2;
TT[idx_r2++] = R3;
}
idx_r1 = 0;
idx_r2 = SCRYPT_R * 4;
#ifdef _unroll
#pragma unroll
#endif
for (int i = 0; i < STATE_CNT4; i++)
for (int i = 0; i < SCRYPT_R; i++)
{
TI[i] = TO[i];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
}
}

32
OpenCL/m15700-pure.cl
View File

@ -139,11 +139,11 @@ DECLSPEC void salsa_r (uint4 *TI)
uint4 R2 = TI[STATE_CNT4 - 2];
uint4 R3 = TI[STATE_CNT4 - 1];
uint4 TO[STATE_CNT4];
uint4 TT[STATE_CNT4 / 2];
int idx_y = 0;
int idx_r1 = 0;
int idx_r2 = SCRYPT_R * 4;
int idx_r2 = 0;
for (int i = 0; i < SCRYPT_R; i++)
{
@ -159,10 +159,10 @@ DECLSPEC void salsa_r (uint4 *TI)
SALSA20_8_XOR ();
TO[idx_r1++] = R0;
TO[idx_r1++] = R1;
TO[idx_r1++] = R2;
TO[idx_r1++] = R3;
TI[idx_r1++] = R0;
TI[idx_r1++] = R1;
TI[idx_r1++] = R2;
TI[idx_r1++] = R3;
Y0 = TI[idx_y++];
Y1 = TI[idx_y++];
@ -171,16 +171,24 @@ DECLSPEC void salsa_r (uint4 *TI)
SALSA20_8_XOR ();
TO[idx_r2++] = R0;
TO[idx_r2++] = R1;
TO[idx_r2++] = R2;
TO[idx_r2++] = R3;
TT[idx_r2++] = R0;
TT[idx_r2++] = R1;
TT[idx_r2++] = R2;
TT[idx_r2++] = R3;
}
idx_r1 = 0;
idx_r2 = SCRYPT_R * 4;
#ifdef _unroll
#pragma unroll
for (int i = 0; i < STATE_CNT4; i++)
#endif
for (int i = 0; i < SCRYPT_R; i++)
{
TI[i] = TO[i];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
}
}

32
OpenCL/m22700-pure.cl
View File

@ -180,11 +180,11 @@ DECLSPEC void salsa_r (uint4 *TI)
uint4 R2 = TI[STATE_CNT4 - 2];
uint4 R3 = TI[STATE_CNT4 - 1];
uint4 TO[STATE_CNT4];
uint4 TT[STATE_CNT4 / 2];
int idx_y = 0;
int idx_r1 = 0;
int idx_r2 = SCRYPT_R * 4;
int idx_r2 = 0;
for (int i = 0; i < SCRYPT_R; i++)
{
@ -200,10 +200,10 @@ DECLSPEC void salsa_r (uint4 *TI)
SALSA20_8_XOR ();
TO[idx_r1++] = R0;
TO[idx_r1++] = R1;
TO[idx_r1++] = R2;
TO[idx_r1++] = R3;
TI[idx_r1++] = R0;
TI[idx_r1++] = R1;
TI[idx_r1++] = R2;
TI[idx_r1++] = R3;
Y0 = TI[idx_y++];
Y1 = TI[idx_y++];
@ -212,16 +212,24 @@ DECLSPEC void salsa_r (uint4 *TI)
SALSA20_8_XOR ();
TO[idx_r2++] = R0;
TO[idx_r2++] = R1;
TO[idx_r2++] = R2;
TO[idx_r2++] = R3;
TT[idx_r2++] = R0;
TT[idx_r2++] = R1;
TT[idx_r2++] = R2;
TT[idx_r2++] = R3;
}
idx_r1 = 0;
idx_r2 = SCRYPT_R * 4;
#ifdef _unroll
#pragma unroll
for (int i = 0; i < STATE_CNT4; i++)
#endif
for (int i = 0; i < SCRYPT_R; i++)
{
TI[i] = TO[i];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
TI[idx_r2++] = TT[idx_r1++];
}
}