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More scrypt intensity information.

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1 parent 52821d4 commit 4cf2b4da236aecfc316ebb94248c4beda7ee650e @ckolivas committed Jul 29, 2012
Showing with 4 additions and 1 deletion.
  1. +4 −1 SCRYPT-README
@@ -81,7 +81,10 @@ reason this is crucial is that too high an intensity can actually be
disastrous with scrypt because it CAN run out of ram. Intensities over 13
start writing over the same ram and it is highly dependent on the GPU, but they
can start actually DECREASING your hashrate, or even worse, start producing
-garbage with rejects skyrocketing.
+garbage with rejects skyrocketing. The low level detail is that intensity is
+only guaranteed up to the power of 2 that most closely matches the thread
+concurrency. i.e. a thread concurrency of 6144 has 8192 as the nearest power
+of two above it, thus as 2^13=8192, that is an intensity of 13.
Optional parameters to tune:

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