--scrypt slowing my hash rate

[Aljam]

Hi There,

I have been playing around with cgminer for the last week, and i notice as soon as i add --scrypt to my cgminer command line my hash rate goes from mhz to khz.

Without --scrypt

command line C:\miner\cgminer-3.7.2-windows\cgminer -o http://cryptopools.com:3334 -u username -p password --gpu-platform 0 -d 0 -w 256 -v 1 -I 8 -g 1 -l 1 --thread-concurrency 1600

This is what i get:

 cgminer version 3.7.2 - Started: [2013-12-07 14:42:30]
--------------------------------------------------------------------------------
 (1s):9.170M (avg):11.10Mh/s | A:0  R:0  HW:0  WU:0.0/m
 ST: 2  SS: 0  NB: 1  LW: 6  GF: 0  RF: 0
 Connected to cryptopools.com diff 16 with stratum as user username
 Block: 99baf224...  Diff:63  Started: [14:42:30]  Best share: 0
--------------------------------------------------------------------------------
 [P]ool management [G]PU management ettings [D]isplay options [Q]uit
 GPU 0:                | 11.27M/11.10Mh/s | A:0 R:0 HW:0 WU:0.0/m I: 8
--------------------------------------------------------------------------------

 [2013-12-07 14:42:23] Started cgminer 3.7.2
 [2013-12-07 14:42:25] Probing for an alive pool
 [2013-12-07 14:42:28] Switching pool 0 http://cryptopools.com:3334 to stratum+t
cp://cryptopools.com:3304
 [2013-12-07 14:42:29] Pool 0 difficulty changed to 16
 [2013-12-07 14:42:30] Network diff set to 63

new blocks get detected every couple of minutes but none get accepted or rejected

But the output all stay on 0


 [2013-12-07 14:44:11] Rejected difficulty shares: 0
 [2013-12-07 14:44:11] Hardware errors: 0
 [2013-12-07 14:44:11] Utility (accepted shares / min): 0.00/min

 [2013-12-07 14:44:11] Work Utility (diff1 shares solved / min): 0.00/min

 [2013-12-07 14:44:11] Stale submissions discarded due to new blocks: 0

 [2013-12-07 14:44:11] Unable to get work from server occasions: 0

 [2013-12-07 14:44:11] Work items generated locally: 9
 [2013-12-07 14:44:11] Submitting work remotely delay occasions: 0

 [2013-12-07 14:44:11] New blocks detected on network: 1

 [2013-12-07 14:44:11] Summary of per device statistics:

 [2013-12-07 14:44:11] GPU0                | (1s):11.28M (avg):11.25Mh/s | A:0 R
:0 HW:0 WU:0.0/m
 [2013-12-07 14:44:11]


With --scrypt
Command line C:\miner\cgminer-3.7.2-windows\cgminer -o http://cryptopools.com:3334 -u username -p password --scrypt --gpu-platform 0 -d 0 -w 256 -v 1 -I 8 -g 1 -l 1 --thread-concurrency 1600

The hash rate just went down to khz but output is not staying on 0 which results in "rejected share is above target" which i believe means the hash rate is to slow.

 cgminer version 3.7.2 - Started: [2013-12-07 15:07:12]
--------------------------------------------------------------------------------
 (1s):6.066K (avg):5.947Kh/s | A:0  R:16  HW:0  WU:4.2/m
 ST: 2  SS: 0  NB: 3  LW: 16  GF: 0  RF: 0
 Connected to cryptopools.com diff 16 with stratum as user username
 Block: 16f649f7...  Diff:54  Started: [15:08:46]  Best share: 292
--------------------------------------------------------------------------------
 [P]ool management [G]PU management ettings [D]isplay options [Q]uit
 GPU 0:                | 5.932K/5.947Kh/s | A:0 R:16 HW:0 WU: 4.2/m I: 8
--------------------------------------------------------------------------------

 [2013-12-07 15:07:07] Started cgminer 3.7.2
 [2013-12-07 15:07:07] Probing for an alive pool
 [2013-12-07 15:07:10] Switching pool 0 http://cryptopools.com:3334 to stratum+t
cp://cryptopools.com:3304
 [2013-12-07 15:07:11] Pool 0 difficulty changed to 16
 [2013-12-07 15:07:12] Network diff set to 56
 [2013-12-07 15:08:10] Rejected e067ce27 Diff 292/16 GPU 0  ((-2, u'Share is abo
ve target
 [2013-12-07 15:08:11] Network diff set to 60
 [2013-12-07 15:08:11] Stratum from pool 0 detected new block
 [2013-12-07 15:08:46] Network diff set to 54
 [2013-12-07 15:08:46] Stratum from pool 0 detected new block

And the output:

 [2013-12-07 15:09:22] Reject ratio: 100.0%
 [2013-12-07 15:09:22] Hardware errors: 0
 [2013-12-07 15:09:22] Utility (accepted shares / min): 0.00/min

 [2013-12-07 15:09:22] Work Utility (diff1 shares solved / min): 4.70/min

 [2013-12-07 15:09:22] Stale submissions discarded due to new blocks: 0

 [2013-12-07 15:09:22] Unable to get work from server occasions: 0

 [2013-12-07 15:09:22] Work items generated locally: 20
 [2013-12-07 15:09:22] Submitting work remotely delay occasions: 0

 [2013-12-07 15:09:22] New blocks detected on network: 4

 [2013-12-07 15:09:22] Summary of per device statistics:

 [2013-12-07 15:09:22] GPU0                | (1s):5.776K (avg):5.938Kh/s | A:0 R
:16 HW:0 WU:4.7/m
 [2013-12-07 15:09:22]
 



Anybody know what is going on here?

[Aljam]

Sorry about the lines through the text, don't know why it did that

[Gator-hex]

--scrypt is for making litecoins it's a different algorithm it's normal that you get a lower hash speed with it.

[Gator-hex]

Sorry about the lines through the text, don't know why it did that

Because you didn't use the # Insert Code marker around the text.

[Aljam]

im sorry but since im a newbie i dont know what you mean by #

[coscosis]

There are two types of crypto currencies. sha256 and scrypt based.
Bitcoin supports sha256 which is calculated in mh/s
litecoin supports scrypt which is calculated in kh/s

If you are mining currency that supports sha256, then don't add scrypt to cgminer.
If you are mining scrypt based currency, you would definitely add scrypt to cgminer.

There is nothing difference between mh/s and kh/s while mining two currencies of different paradigm.

[Gator-hex]

im sorry but since im a newbie i dont know what you mean by #

When you reply there are some icons above the text box. It's the one with # = Insert Code
It's so you can type stuff, like programming code, without it being it being effected by the forum format like strikethrough.

I typed = strikethrough

Code:

I typed [S] = strikethrough

[Aljam]

so i guess its no use i even try mining with that khz rate