Quote from: phelix on September 29, 2011, 07:31:57 AM

are the 1354 ALU OPs for a single SHA256 or for double? as in SHA256(SHA256(Block_Header))

http://bitcoin.stackexchange.com/questions/1293/how-many-integer-operations-on-a-gpu-are-necessary-for-one-hash

network speed guinness world record
https://bitcointalk.org/index.php?topic=38064.0

1354 OPs are for two double hashes.

SHA256(SHA256(Block_Header1)), SHA256(SHA256(Block_Header2))

so, 677 per double hash.

Although, there aren't completely full hashes, since the first and last few rounds (a few %) have optimized out.

Also, each ALU OP is a VLIW5 (very long instruction word) instruction which contains 5 integer operations that run simultaneously, so... depending on how you think about it,

could be ~3375 integer operations or 677 VLIW5 instructions

Hope this helps, let me know if you need any more help with this. I am interested in how this turns out.