VSQRTPS (XMM, XMM)

With unroll_count=500 and no inner loop

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 4.32
- APERF: 5.0
- UOPS: 1.0
- FpuPipeAssignment.Total0: 0.5
- FpuPipeAssignment.Total1: 0.5
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With unroll_count=500 and no inner loop

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	0f ae e8             	lfence

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 25.87
- APERF: 30.0
- UOPS: 2.0
- FpuPipeAssignment.Total0: 1.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=10

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 4.31
- APERF: 5.0
- UOPS: 1.1
- FpuPipeAssignment.Total0: 0.5
- FpuPipeAssignment.Total1: 0.5
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=100

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 4.31
- APERF: 5.0
- UOPS: 1.01
- FpuPipeAssignment.Total0: 0.5
- FpuPipeAssignment.Total1: 0.5
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 17.31
- APERF: 20.0
- UOPS: 4.0
- FpuPipeAssignment.Total0: 1.94
- FpuPipeAssignment.Total1: 2.06
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=2

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 17.25
- APERF: 20.01
- UOPS: 4.5
- FpuPipeAssignment.Total0: 2.0
- FpuPipeAssignment.Total1: 2.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=20

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 17.25
- APERF: 20.01
- UOPS: 4.05
- FpuPipeAssignment.Total0: 2.0
- FpuPipeAssignment.Total1: 2.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0
  10:	c5 f8 51 f0          	vsqrtps xmm6,xmm0
  14:	c5 f8 51 f8          	vsqrtps xmm7,xmm0
  18:	c5 78 51 c0          	vsqrtps xmm8,xmm0
  1c:	c5 78 51 c8          	vsqrtps xmm9,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 34.31
- APERF: 40.0
- UOPS: 8.0
- FpuPipeAssignment.Total0: 4.13
- FpuPipeAssignment.Total1: 3.88
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0
  10:	c5 f8 51 f0          	vsqrtps xmm6,xmm0
  14:	c5 f8 51 f8          	vsqrtps xmm7,xmm0
  18:	c5 78 51 c0          	vsqrtps xmm8,xmm0
  1c:	c5 78 51 c8          	vsqrtps xmm9,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 34.51
- APERF: 40.01
- UOPS: 9.0
- FpuPipeAssignment.Total0: 4.01
- FpuPipeAssignment.Total1: 3.99
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0
  10:	c5 f8 51 f0          	vsqrtps xmm6,xmm0
  14:	c5 f8 51 f8          	vsqrtps xmm7,xmm0
  18:	c5 78 51 c0          	vsqrtps xmm8,xmm0
  1c:	c5 78 51 c8          	vsqrtps xmm9,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x3f8000003f800000;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 34.5
- APERF: 40.01
- UOPS: 8.1
- FpuPipeAssignment.Total0: 3.99
- FpuPipeAssignment.Total1: 4.01
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

Slow division

With 1 independent instruction

With unroll_count=500 and no inner loop

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 4.32
- APERF: 5.0
- UOPS: 1.0
- FpuPipeAssignment.Total0: 0.5
- FpuPipeAssignment.Total1: 0.5
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With unroll_count=500 and no inner loop

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	0f ae e8             	lfence

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 25.85
- APERF: 30.0
- UOPS: 2.0
- FpuPipeAssignment.Total0: 1.0
- FpuPipeAssignment.Total1: 0.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=10

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 4.31
- APERF: 5.0
- UOPS: 1.1
- FpuPipeAssignment.Total0: 0.5
- FpuPipeAssignment.Total1: 0.5
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=100

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 4.31
- APERF: 5.0
- UOPS: 1.01
- FpuPipeAssignment.Total0: 0.5
- FpuPipeAssignment.Total1: 0.5
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With 4 independent instructions

With unroll_count=200 and no inner loop

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 17.19
- APERF: 20.0
- UOPS: 4.0
- FpuPipeAssignment.Total0: 2.06
- FpuPipeAssignment.Total1: 1.94
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=2

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 17.25
- APERF: 20.01
- UOPS: 4.5
- FpuPipeAssignment.Total0: 2.0
- FpuPipeAssignment.Total1: 2.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=20

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 17.25
- APERF: 20.01
- UOPS: 4.05
- FpuPipeAssignment.Total0: 2.0
- FpuPipeAssignment.Total1: 2.0
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With 8 independent instructions

With unroll_count=100 and no inner loop

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0
  10:	c5 f8 51 f0          	vsqrtps xmm6,xmm0
  14:	c5 f8 51 f8          	vsqrtps xmm7,xmm0
  18:	c5 78 51 c0          	vsqrtps xmm8,xmm0
  1c:	c5 78 51 c8          	vsqrtps xmm9,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 34.55
- APERF: 40.0
- UOPS: 8.0
- FpuPipeAssignment.Total0: 4.13
- FpuPipeAssignment.Total1: 3.88
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=1000 and unroll_count=1

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0
  10:	c5 f8 51 f0          	vsqrtps xmm6,xmm0
  14:	c5 f8 51 f8          	vsqrtps xmm7,xmm0
  18:	c5 78 51 c0          	vsqrtps xmm8,xmm0
  1c:	c5 78 51 c8          	vsqrtps xmm9,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 34.5
- APERF: 40.01
- UOPS: 9.0
- FpuPipeAssignment.Total0: 4.01
- FpuPipeAssignment.Total1: 3.99
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

With loop_count=100 and unroll_count=10

Code:

   0:	c5 f8 51 d0          	vsqrtps xmm2,xmm0
   4:	c5 f8 51 d8          	vsqrtps xmm3,xmm0
   8:	c5 f8 51 e0          	vsqrtps xmm4,xmm0
   c:	c5 f8 51 e8          	vsqrtps xmm5,xmm0
  10:	c5 f8 51 f0          	vsqrtps xmm6,xmm0
  14:	c5 f8 51 f8          	vsqrtps xmm7,xmm0
  18:	c5 78 51 c0          	vsqrtps xmm8,xmm0
  1c:	c5 78 51 c8          	vsqrtps xmm9,xmm0

Init:

MOV R15, 10000;
L: VADDPS YMM0, YMM1, YMM1;
VADDPS YMM0, YMM1, YMM1;
DEC R15;
JNZ L;
VZEROALL;
MOV RAX, 0x72d30ff172d30ff1;
MOV [R14+0], RAX;
MOV [R14+8], RAX;
VMOVUPS XMM0, [R14]

Show nanoBench command
Results:
- MPERF: 34.5
- APERF: 40.01
- UOPS: 8.1
- FpuPipeAssignment.Total0: 4.01
- FpuPipeAssignment.Total1: 3.99
- FpuPipeAssignment.Total2: 0.0
- FpuPipeAssignment.Total3: 0.0
- FpuPipeAssignment.Total4: 0.0
- FpuPipeAssignment.Total5: 0.0
- DIV_CYCLES: 0.0

VSQRTPS (XMM, XMM) - Throughput and Uops

Fast division

With 1 independent instruction

With unroll_count=500 and no inner loop

With unroll_count=500 and no inner loop

With loop_count=1000 and unroll_count=10

With loop_count=100 and unroll_count=100

With 4 independent instructions

With unroll_count=200 and no inner loop

With loop_count=1000 and unroll_count=2

With loop_count=100 and unroll_count=20

With 8 independent instructions

With unroll_count=100 and no inner loop

With loop_count=1000 and unroll_count=1

With loop_count=100 and unroll_count=10

Slow division

With 1 independent instruction

With unroll_count=500 and no inner loop

With unroll_count=500 and no inner loop

With loop_count=1000 and unroll_count=10

With loop_count=100 and unroll_count=100

With 4 independent instructions

With unroll_count=200 and no inner loop

With loop_count=1000 and unroll_count=2

With loop_count=100 and unroll_count=20

With 8 independent instructions

With unroll_count=100 and no inner loop

With loop_count=1000 and unroll_count=1

With loop_count=100 and unroll_count=10