github-wownero/RandomX
1
0
Fork 0
mirror of https://github.com/wownero/RandomX.git synced 2026-10-20 08:48:45 +02:00
Code Issues Packages Projects Releases Wiki Activity

Configuration guidelines (#59)

Browse Source 
* added detailed guidelines for the selection of configuration values
* added additional compile-time checks to prevent bad configurations
* removed RANDOMX_SUPERSCALAR_MAX_SIZE parameter
This commit is contained in:
tevador
2019-06-10 15:57:36 +02:00
committed by GitHub
parent 37e9e77905
commit 0c5b666df4
8 changed files with 303 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/superscalar.cpp
+3 -3
View File
@@ -673,8 +673,8 @@ namespace randomx {
//Each decode cycle decodes 16 bytes of x86 code.
//Since a decode cycle produces on average 3.45 macro-ops and there are only 3 ALU ports, execution ports are always
//saturated first. The cycle limit is present only to guarantee loop termination.
//Program size is limited to RANDOMX_SUPERSCALAR_MAX_SIZE instructions.
for (decodeCycle = 0; decodeCycle < RANDOMX_SUPERSCALAR_LATENCY && !portsSaturated && programSize < RANDOMX_SUPERSCALAR_MAX_SIZE; ++decodeCycle) {
//Program size is limited to SuperscalarMaxSize instructions.
for (decodeCycle = 0; decodeCycle < RANDOMX_SUPERSCALAR_LATENCY && !portsSaturated && programSize < SuperscalarMaxSize; ++decodeCycle) {
//select a decode configuration
decodeBuffer = decodeBuffer->fetchNext(currentInstruction.getType(), decodeCycle, mulCount, gen);
@@ -688,7 +688,7 @@ namespace randomx {
//if we have issued all macro-ops for the current RandomX instruction, create a new instruction
if (macroOpIndex >= currentInstruction.getInfo().getSize()) {
if (portsSaturated || programSize >= RANDOMX_SUPERSCALAR_MAX_SIZE)
if (portsSaturated || programSize >= SuperscalarMaxSize)
break;
//select an instruction so that the first macro-op fits into the current slot
currentInstruction.createForSlot(gen, decodeBuffer->getCounts()[bufferIndex], decodeBuffer->getIndex(), decodeBuffer->getSize() == bufferIndex + 1, bufferIndex == 0);