Hi,

thanks for the info. Seems like a solid bug, will hammer it out in the next version.

Regards,
glph3k

Hi,

a new Cast XMR version is available.

Regards,
glph3k


Cast XMR Version 1.1.0 (2018/6/1)

- All new --intensity option to specify the memory allocation in the range of 0 to 10, up to 12 for Vega Frontier Edition.
  The default setting will correspond with the settings of version 1.0 and are displayed at startup.
- Vega Frontier 'Large Pages' support added, up to 30% higher hash rates for CryptoNight-Heavy, 5% increase for CryptoNight
- Includes the switch-radeon-gpu command line tool to restart GPUs, switch on/off HBCC, Compute Mode and Large Pages
- Nicehash supports now up to 24 GPUs
- --maxmem option is deprecated, will now be mapped to an corresponding intensity setting
- --forcecompute is deprecated, 'Compute Mode' of Polaris GPUs will be automatically detected. To overwrite use the --intensity option
- Default mining algo changed to CryptoNightV7, to still mine CryptoNight Classic add --algo=0
- Tested with Radeon Adrenalin Driver 18.4.1

Download Cast XMR 1.1.0 for Windows (64bit)

SHA256 hash of cast_xmr-vega-win64_110.zip:
4d477d47117ea51e27e730bbe5676e53a18e0ca8f69fa3d41bcdd74d4a453075

With Radeon Settings the AMD Adrenaline Radeon Settings is meant, the icon with the red balls circling around.

The "HBCC Memory Segment" is an option in the "Global Graphics" tab. I am not aware of another tool that can toggle the HBCC memory option, anyone?

If not the improvement is not dramatic and the stability is really worse then without the option... but if you like give it a try maybe it works for you.

Regards,
glph3k

Hi,

Cast XMR version 1.0 is available.

Now CryptoNight Lite variants are supported. Lite coins like Aeon, IPBC and Turtle.

With the Lite algo higher hash rates can be achieved as it only uses an 1 MB scratchpad.

Following hash rates should be reachable.

RX Vega 56/64: 4250 Lite Hashes/s
RX 470/570/480/580: 1600 Lite Hashes/s

Use the --memset option to squeeze some extra hashes. It was enabled by default in the 0.9.7 version, now it is default disabled. It is probably only recommendable if a hash rate monitor is used to reset the GPU if an hash rate is drop is detected. Btw. from my observations the 18.3.4 drivers seem more resilient against hash rate drops then the legacy blockchain beta drivers.

Regards,
Glph3k

Cast XMR Version 1.0.0 (2018/4/24)

- Support for Aeon (AEON) CryptoNight Lite variant set --algo=3 to mine
- Support for Turtlecoin (TRTL) CryptoNightV7 Lite variant set --algo=4 to mine
- Support for Interplanetary Broadcast Coin (IPBC) CryptoNight Lite IPBC variation set --algo=5 to mine
- Up to 3% performance improvement with new option --maxmem to allocate the maximum memory of the card. For Vega cards the "HBCC Memory Segment" has to be disabled in the Radeon Settings to use the option. Disadvantage is a higher risk of hash rate drops when the --maxmem option is used.

Download Cast XMR 1.0.0 for Windows (64bit)

SHA256 hash of cast_xmr-vega-win64_100.zip:
fab141ce2b3e3b32636fedfc242e9b91edc21317e108fb361368570694dd338e

Hi,

which driver version are you using?

Unless you have the blockchain driver installed:

 --forcecompute is the way to go to get the extra hashes. Are you sure that all cards are switched to "Compute" mode in the Radeon settings?


Regards,
glph3k

Hi,

try the option "--ratewatchdog" to monitor the hash rate and automatic restart of a dropping GPU.

Or use the cast-xmr-ui for monitoring:

https://github.com/anadventureisu/cast-xmr-ui

Btw. are you using the Blockchain Beta or 18.3.4 driver?

Regards,
glph3k

Hi,

problem on nicehash could be the switch of Graft (GRFT), the PoW change seems hanging between CryptoNight and CryptoNightV7.

Also IPBC switched from classic CryptoNight to a new CryptoNight variant (yes, support is planned).

Seems currently hard for Nicehash to keep their streams clean with all the forking and pool updates.

Regards,
Glph3k

Hi,

there is an bugfix update of Cast XMR available.

regards,
glph3k


Cast XMR Version 0.9.6 (2018/04/17)
  - CryptoNight-Heavy fix for very low hash rates when HBCC Memory Segment is enabled
  - HBCC Memory Segment performance hint for Vega64 when mining CryptoNightV7
  - Improvement for 4GB versions of RX 470/480/570/580 when mining CryptoNightV7

Download Cast XMR 0.9.6 for Windows (64bit)

SHA256 hash of cast_xmr-vega-win64_096.zip:
13b69be46aeac2561c5f2f4484757c4abd0086f592826ddbd1a95bf34e01268d

Yes, working on it.

Hi,

that is indeed an interessting info! That is probably the reason for the bugger.

gfx900 means that HBCC memory is turned off
gfx901 means that HBCC memory is turned on

Please try to turn off HBCC memory on all cards.

Regards,
glph3k

Hi,

to all who experience low hashrates with CryptoNight-Heavy. If you are using the Blockchain Aug23 beta drivers. it is a known problem.

A fix will be released in the next version.

Regards,
Glph3k

Hi,

sorry, Heavy was only tested with 18.3.4 drivers. Will check the situation is with the blockchain drivers.

Regards,
Glph3k

Hi,

do the cards have 4 or 8 GB? Which driver version? Would recommend 18.3.4. What do you mean exactly with 100 h/s? 100 h/s lower or really just 100 h/s?

Regards,
Glph3k

Hi,

which driver version are you using? For Heavy would recommend 18.3.4.

Regards,
Glph3k

Hi,

there is an update of Cast XMR available.

Cast XMR now supports CryptoNight-Heavy.

CryptoNight Heavy is different, the read/writes are smaller but use a larger "scratch pad" so the hash rates are not comparable with classic CryptoNight.

Here are some first performance values (tested with 18.3.4 drivers):

Vega 56  945 MemClk: 1450 Heavy Hashes/s
Vega 64 1025 MemClk: 1550 Heavy Hashes/s
Vega FE 1025 MemClk: 1640 Heavy Hashes/s
RX 570 Compute Mode: 850 Heavy Hashes/s (Polaris picks up!)

Regards,
glph3k

Cast XMR Version 0.9.5 (2018/04/14)
  - 0.5% performance improvement for the CryptoNightV7 kernel
  - support for CryptoNight Heavy set --algo=2 to mine:
    - Sumokoin (SUMO)
    - Haven (XHV)

Download Cast XMR 0.9.5 for Windows (64bit)

SHA256 hash of cast_xmr-vega-win64_095.zip:
46edbb6e52ada7eafaa05000e055fbbd5ce1f1cab134d763abdd8598c8610a09

Hi,

stelllite is support just use the option "--algo=1" to enforce CryptoNightV7,  that is what they switched to.

Looking into CryptoNight Heavy for SUMO and Haven. But as stated earlier it will probably result in a new app. The changes from CryptoNight to Heavy are to hefty to be implemented efficient in one kernel. So stay tuned.

Regards,
glph3k

Hi,

the problem is that the current Monero block time is very high to the slow difficult adjust (> 15 minutes per block). Nicehash search space is exceeded in about 20 minutes with 8 Vegas and the GPUs search in overlapping nonce ranges.

If you are not using a proxy use the option "--nonicehash" to disable nicehash support. That should fix it.

Regards,
glph3k

Hi,

for Monero the switch will happen automatically. It will be determined by the block version, which will switch to 7.

It will state "New Job received (CryptoNightV7)", note the V7, then you will know you are on the new fork.

1000 blocks to go...

Regards,
glph3k

Hi,

CryptoNight-Heavy is used only by SumoKoin? Or are any other coins using or planning to use Heavy?

Regards,
glph3k

Hi,

thinking about it. Not sure if it will integrate in Cast XMR but as an separate app as the changes can not run optimal with the current kernel layout.

Regards,
glph3k