EDIT: Issue resolved
https://bitcointalk.org/index.php?topic=519943.msg7377697#msg7377697Are you running both boards from that AX1200 PSU ?
If yes there might be your problem.
I'm using 2 PSUs 850W + 750W and power draw from the wall is around 1450W at 775MHZ.
no no, Antec1300w and AX1200i pulling a total of 1440w at the wall.
and this is the cgminer stats at the time of posting.
0: HFB JOLOKIA : 825MHz 87C 100% 0.84V | 534.3G / 621.0Gh/s WU:8676.0/m A:428159 R: 0 HW:119
1: HFB FRUTESCE: 762MHz 77C 100% 0.84V | 539.6G / 586.9Gh/s WU:8199.9/m A:418570 R:532 HW: 49
sadly if I push either board any more it's noticeably unstable. 620ghs and 580ghs is what i can get from my boards. without the ability to adjust the individual dies' clock rate, i can't squeeze the last bits of hash out of them. I don't know if anyone's going to put the effort in to read the code and suggest what needs to be fixed so we can fully utilize the HF-Tool.
oh and this is what happens when i say unstable:
[2014-06-17 21:25:45] Accepted 380808fb Diff 1.17K/532 HFB 0 pool 0
[2014-06-17 21:25:51] Accepted 65e2e50e Diff 643/532 HFB 1 pool 0
[2014-06-17 21:25:52] HFB JOLOKIA: No valid hashes for over 5 seconds, shutting down thread
[2014-06-17 21:25:59] HFB 0 failure, disabling!
[2014-06-17 21:26:05] HFA 0 HFName usb write err:(-7) LIBUSB_ERROR_TIMEOUT
[2014-06-17 21:26:05] HFA 0 attempted reset got err:(0) LIBUSB_SUCCESS
[2014-06-17 21:26:05] HFA : hfa_send_frame: USB Send error, ret 0 amount 0 vs. tx_length 8, retrying
[2014-06-17 21:26:05] HFA : hfa_send_frame: recovered OK
[2014-06-17 21:26:05] HFA 0 HFGetHeader usb read err:(-9) LIBUSB_ERROR_PIPE
[2014-06-17 21:26:05] HFA 0 attempted reset got err:(-5) LIBUSB_ERROR_NOT_FOUND
[2014-06-17 21:26:05] FAIL: USB get_lock not found (2:11)
[2014-06-17 21:26:10] Accepted 79a271c1 Diff 539/532 HFB 1 pool 0
[2014-06-17 21:26:11] HFA: Found old instance by op name JOLOKIA at device 0
[2014-06-17 21:26:11] Hotplug: Hashfast added HFA 2
[2014-06-17 21:26:24] Accepted 23b05141 Diff 1.84K/532 HFB 1 pool 0
[2014-06-17 21:26:25] Accepted 32558e25 Diff 1.3K/532 HFB 0 pool 0
I have no solution to the above other than to use a lower clock rate. I have tried to set the Voltage higher with the HF-Tool but even if i set 930, cgminer still only runs with under 0.90V.
if anyone has any hints, I'd much appreciate it.
Cheers,
QG
EDIT: Issue resolved
https://bitcointalk.org/index.php?topic=519943.msg7377697#msg7377697