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Running ubuntu 60.04 on a very old machine with amd "athlon II" cpus, this error comes up with every attempt to submit to nisehash

2016-11-19 06:31:55] 4 miner threads started, using 'cryptonight' algorithm.
[2016-11-19 06:31:55] Binding thread 3 to cpu 3 (mask 8)

• Trying 5.153.50.217...
• TCP_NODELAY set
• Connected to cryptonight.eu.nicehash.com (5.153.50.217) port 3355 (#0)
• Connection #0 to host cryptonight.eu.nicehash.com left intact
  [2016-11-19 06:31:56] > {"method": "login", "params": {"login": "14CKxZLHFc1YFrQ8EVuNYsdKn58r9kAYvJ.Family", "pass": "", "agent": "cpuminer-multi/1.3"}, "id": 1}
  [2016-11-19 06:31:57] < {"jsonrpc":"2.0","id":1,"error":null,"result":{"id":"430988424453051","status":"OK","job":{"job_id":"0000003ec8490bd1","blob":"0305c6c4c1c10506856dc343e3fb54d34d3c4774cf900ea79d5cad8a6b5842757e6413c1a6bb08000000d329b74d1bcbbded40d917ab6cba98c0b8d331e484f24dac46c9fde175b7f00b4002","target":"b88d0600"}}}
  [2016-11-19 06:31:57] Auth id: 430988424453051
  [2016-11-19 06:31:57] Stratum difficulty set to 10000
  [2016-11-19 06:32:05] CPU #2: 8.50 H/s
  [2016-11-19 06:32:06] CPU #0: 8.01 H/s
  [2016-11-19 06:32:06] CPU #1: 7.93 H/s
  [2016-11-19 06:32:06] CPU #3: 7.76 H/s
  [2016-11-19 06:32:17] share diff 0.00000 (1.7x)
  [2016-11-19 06:32:17] CPU #1: 8.16 H/s
  [2016-11-19 06:32:17] > {"method": "submit", "params": {"id": "430988424453051", "job_id": "0000003ec8490bd1", "nonce": "9e000040", "result": "3eab7e68cee8a55764e35775391c13cff7c498715c71e778cb30931550c60300"}, "id":4}

[2016-11-19 06:32:17] stratum_recv_line failed
[2016-11-19 06:32:17] Stratum connection interrupted

• Rebuilt URL to: http://cryptonight.eu.nicehash.com:3355/
  [2016-11-19 06:32:18] CPU #0: 8.26 H/s
  [2016-11-19 06:32:18] CPU #2: 8.19 H/s
  [2016-11-19 06:32:18] CPU #1: 7.63 H/s
  [2016-11-19 06:32:18] CPU #3: 7.84 H/s

Hello, i am setting up a yiimp based pool for many CPU coins, many algorithms present problems when adjusting the stratum diff, for example for a Pentium processor that can hash at 300 H/S in lyra2z330 algo, when i set diff to 0.004 some workers can't find a share and keep giving me the stratum_rec_line failed, other workers run fine, then if i set diff to 0.003 i get rid of the stratum error but get all invalid shares for low difficulty, i tried to set difficulty to .00035 but yiimp stratum wont take the fourth decimal, so, for a workaround i was wondering if i can connect the miners to .003 diff port but specify the minimum difficulty in the command line (in the client side) to avoid low diff rejected, i googled a lot trying to find the syntax (if it exist) to set min share diff on miner startup. please let me know if this is possible, will solve a lot of problems to many pools. regards

Hi, have you removed most of the algorithms support?

For SHA 256, scrypt and X11 I get

FAIL: algo_gate registration failed, unknown algo x11

for example for X11.