Title: ZCASH mining with gtx1080 observation regarding memory Post by: ggbtctalk000 on December 06, 2017, 06:42:05 PM From what I understood zcash is one of the coins that ANT miner can not take advantage of because its algorithm: equihash depends on memory availability not the hashing speed. (I probably need to read more on this).
Now I had two gtx1080 equipped system started mining zcash from pool and see statistics below: Both has 8GB DDR5X but only appears to be using 700MB for mining. Does that mean it is not utilizing its memory to its full potential and buying 11GB DDR5 edition will give no performance improvement? The quote below is taken from zcash web but not sure which memory it is referring to: GPU memory 8GB System mapped GPU memory (i.e. standard BAR address) usually 256MB for graphics System main memory DDR4/3 etc interfaced to main processor. And does anyone knows good technically sound crypto books and/or online resource on latest mining algorithms? I do have a very good book but it mostly covers older hashing and encryption algorithm i.e. SHA, RSA, but not Scrypto, Equihash. I dont know look through online crap articles on something written by non-technicals. Thanks! [root@MINER-Z270-SLI ~]# nvidia-smi -q | egrep "GPU 0|Power Draw|Current.*Temp|Product Name|MHz|MiB" GPU 00000000:01:00.0 Product Name : GeForce GTX 1080 Total : 8114 MiB Used : 637 MiB Free : 7477 MiB Total : 256 MiB Used : 2 MiB Free : 254 MiB GPU Current Temp : 64 C Memory Current Temp : N/A Power Draw : 181.74 W Graphics : 1885 MHz SM : 1885 MHz Memory : 4513 MHz Video : 1695 MHz Graphics : 1974 MHz SM : 1974 MHz Memory : 5005 MHz Video : 1708 MHz Used GPU Memory : 627 MiB GPU 00000000:02:00.0 Product Name : GeForce GTX 1080 Total : 8114 MiB Used : 637 MiB Free : 7477 MiB Total : 256 MiB Used : 2 MiB Free : 254 MiB GPU Current Temp : 61 C Memory Current Temp : N/A Power Draw : 192.67 W Graphics : 1936 MHz SM : 1936 MHz Memory : 4513 MHz Video : 1733 MHz Graphics : 1974 MHz SM : 1974 MHz Memory : 5005 MHz Video : 1708 MHz Used GPU Memory : 627 M https://z.cash/blog/why-equihash "Equihash is a memory-oriented Proof-of-Work, which means how much mining you can do is mostly determined by how much RAM you have. We think it is unlikely that anyone will be able to build cost-effective custom hardware (ASICs) for mining in the foreseeable future. " |