Amazon EC2 for Primecoin

Marketplace Primecoin
1

Has anyone used this for primecoin mining?

Especially after the difficulty increase?

I was looking at the 32 and 16 core chips which are roughly $28.8 and $57.6/day. How many XPM can these output? Is it worth it?

Any experience with this or any other amazon chips would be much appreciated.

2

One of those nodes might yield a couple of XPM a day at best. I think you’ll be spending a lot more than you’ll make by using AWS.

3

I did some tests with Amazon c3.8xlarge, but I am quite disappointed with the resuts:

{
“version” : “v0.1.2.0xpm-hp11-unk-beta”,
“protocolversion” : 70001,
“walletversion” : 60000,
“balance” : 0.00000000,
“blocks” : 326725,
“moneysupply” : 3704270.03002805,
“timeoffset” : 0,
“connections” : 8,
“proxy” : “”,
“testnet” : false,
“keypoololdest” : 1387840524,
“keypoolsize” : 101,
“paytxfee” : 0.00000000,
“errors” : “”
}

{
“blocks” : 326725,
“chainspermin” : 24,
“chainsperday” : 0.21109102,
“currentblocksize” : 2805,
“currentblocktx” : 8,
“difficulty” : 10.18756902,
“errors” : “”,
“generate” : true,
“genproclimit” : -1,
“primespersec” : 6813,
“pooledtx” : 8,
“sieveextensions” : 9,
“sievepercentage” : 10,
“sievesize” : 1000000,
“testnet” : false
}

Can anyone explain, why the value for “chainsperday” is that low?
According to (http://anty.info/primecoin-hardware/) I should be able to get better results, right?

4

Now that the difficulty is above 10, all the various hardware comparison charts need to be redone.

5

maybe datacoin, and better use spot instance

6

Today I did some tests with cc2.8xlarge (32 vCPU, 88 ECU):

[STATS] 2013-12-25 22:34:41 | 6795 primes/s, 109852 tests/s, 2520 5-chains/h, 0.216 chains/d

My questions:

  1. How much XPM can I expect to mine with these stats? (on pool beeeeer.org)
  2. Is the following calculator still valid (after the chain length increase from 9 to 10)? => http://anty.info/primecoin-calculator/

Best regards,
Volker

7

Hi guys!

  1. Mining on cc2.8xlarge can be profitable only if its price is lower than $0.10/h. Unfortunately its spot price is $0.43-0.46.

Other instances (c3.8, c3.4) are absolutely meaningless because of even higher production cost.

Here are some stats:
EC2 c3.4xlarge (55 EPU) 16 threads Xeon E5-2680v2, Ubuntu13 (Oregon) 3800-4000 pps (beeeeer.org miner) ~0.81$/h
EC2 cc2.8xlarge (88 EPU) 32 threads Xeon E5-2670, Win8 (Oregon) 6200-6400 pps (beeeeer.org miner) ~0.46$/h
EC2 c3.8xlarge (108 EPU) 32 threads Xeon E5-2680v2, Win8 (N.California) 6900-7000 pps (beeeeer.org miner) ~1.0$/h

Real mining speed is 1-1.5 XPM ($2-3 for now) per day :frowning:

Better go and buy some BTC for cash…

  1. Calculator is seems to be quite good, my values confirmed.
8

do you think these numbers would be the same if you had your own E5-2680 server? I have one i can potentially use for mining, however, I would like to know how much revenue i would get. Dual processor.

9

+1

10

Does anybody know, how to make jhprimeminer slower? For example, 50% usage of CPU (20%, 10%…) . I’ve tried to insert different sleep() into source code, but without success :frowning: .

11

Just use -t 4 to use 4 cores, if you for example have 4 cores on the system use -t 2 to only use 2 of them. That would result in ~50% usage.

Adding sleep into the miner code is the worst thing you can do.
In fact if you are doing such things don’t fiddle around with the code at all :slight_smile:

12

I know about threads, but this is not what I’m looking for.
I would load CPU for 10-20%, not more, because it’s doing other tasks.

13

[quote=“druzhkov, post:12, topic:1243”]I know about threads, but this is not what I’m looking for.
I would load CPU for 10-20%, not more, because it’s doing other tasks.[/quote]

while using linux you can try cpulimit