Jalapeno pulling < 5 Gh/s, possible reasons?

Red_Wolf_2

sr. member

Activity: 252

Merit: 250

Quote from: volosator on August 23, 2013, 10:55:22 AM

Firmware is not 1.2.5 or 1.2.6
There is a topic on the forum with flashing instructions.

Before running a flash on the unit, please grab the stats using the ZCX command as listed above. If a lot of the engines are disabled then reflashing might not get you a huge performance increase. At the very least we'll be able to tell whether its deliberately limited or not :-)

volosator

sr. member

Activity: 272

Merit: 250

Firmware is not 1.2.5 or 1.2.6
There is a topic on the forum with flashing instructions.

rammy2k2

legendary

Activity: 1974

Merit: 1003

do NOT put it in the fridge .. u will ruin it ... 4.8 GH is just normal

Red_Wolf_2

sr. member

Activity: 252

Merit: 250

Or plug it in, fire up a terminal program and connect to its COM port, then issue the command ZCX. That should give you output similar to the following:
DEVICE: BitFORCE SC
FIRMWARE: 1.0.0
MINIG SPEED: 7.61 GH/s
PROCESSOR 3: 15 engines @ 259 MHz
PROCESSOR 7: 14 engines @ 271 MHz
ENGINES: 29
FREQUENCY: 266 MHz
XLINK MODE: MASTER
CRITICAL TEMPERATURE: 0
XLINK PRESENT: NO
OK

derr777

member

Activity: 87

Merit: 10

Quote from: ElitePork on August 23, 2013, 01:51:22 AM

How many engines are running? You can check using cgminer --api-listen and java API stats.
Post the results here and i can see from there....

Yes, or install cgwatcher and look at its info dialog, as it polls the engines as well..

ElitePork

donator

Activity: 164

Merit: 100

How many engines are running? You can check using cgminer --api-listen and java API stats.
Post the results here and i can see from there....

derr777

member

Activity: 87

Merit: 10

put it in the freezer for about 10-15 mins before plugging it in.. it initializes engines when plugged in (and never again unless it loses power or usb communications request a reset.) only.

There is a risk here of condensation, but once you get it cold and plug it in and get more engines pretty much until you unplug it again, the risk is arguably worth it. I use a bag to prevent condensation.

Let us know how high it goes after being that cold.. the firmware basically is very vigorous with engine initialization.. i've found you can generally eek out 2-4 borderline engines by doing this, and each of them will add around 250gh each..

joris

full member

Activity: 141

Merit: 100

Then it meets Jalapeno specs: 4,5 Gh +/- 10%

FiloSottile

newbie

Activity: 11

Merit: 0

Quote from: bcp19 on August 22, 2013, 02:48:15 PM

Quote from: FiloSottile on August 22, 2013, 02:06:25 PM

Just started a new BFL Jal unit, connected to a RaspberryPi with MinePeon.
I removed the box, flipped the fan and the temp is a good 35C.

However the hashrate never got to 5 Gh/s.

What's a list of possible reasons I should look into?

Did it get above 4.5GH?

Yeah, pulling 4.864 GH/s since unboxing.

bcp19

hero member

Activity: 532

Merit: 500

Quote from: FiloSottile on August 22, 2013, 02:06:25 PM

Just started a new BFL Jal unit, connected to a RaspberryPi with MinePeon.
I removed the box, flipped the fan and the temp is a good 35C.

However the hashrate never got to 5 Gh/s.

What's a list of possible reasons I should look into?

Did it get above 4.5GH?

FiloSottile

newbie

Activity: 11

Merit: 0

Ah, I have a quite high HW Error rate: 1514 [7.24%]

FiloSottile

newbie

Activity: 11

Merit: 0

Just started a new BFL Jal unit, connected to a RaspberryPi with MinePeon.
I removed the box, flipped the fan and the temp is a good 35C.

However the hashrate never got to 5 Gh/s.

What's a list of possible reasons I should look into?

Topic: Jalapeno pulling < 5 Gh/s, possible reasons? (Read 1232 times)