It is still possible to mine BEAM with GeForce GTX 1060 3GB and GMiner on HiveOS. GMiner takes 2862MB on GPU0 and 2850MiB on GPU1-7:
Author Archives: dmitriano
Building and running rippled on Ubuntu.
I successfully build and run rippled 1.1.2 on Ubuntu 18.04 with the following commands:
sudo apt-get -y install git cmake pkg-config protobuf-compiler libprotobuf-dev libssl-dev wget
cd ~Downloads/
wget https://dl.bintray.com/boostorg/release/1.67.0/source/boost_1_67_0.tar.gz
cd ..
mkdir lib
cd lib/
tar xvzf ~/Downloads/boost_1_67_0.tar.gz
./bootstrap.sh
./b2 -j1
export BOOST_ROOT=/home/xrp/lib/boost_1_67_0
cd ~/repos/
git clone https://github.com/ripple/rippled.git
cd rippled
git tag
git show --summary 1.1.2
git reset --hard 1.1.2
mkdir build
cd build/
cmake ..
cmake --build .
./rippled -u
Setting up time synchronization on Ubuntu
I followed the official Ubuntu time synchronization guide and installed chrony:
sudo apt update sudo apt install chrony cat /etc/chrony/chrony.conf chronyc sources chronyc sourcestats sudo systemctl restart chrony.service apt remove --autoremove chrony
Setting up Ethereum node on Windows 10 and Ubuntu.
After a few attempts I was able to start Ethereum Mist 0.11.1 in ‘fast’ mode on Windows 10:
it downloaded ‘geth’, connected to {“path”:”\\\\.\\pipe\\geth.ipc”} and started to sync, but when sync finished I was unable to send transactions (they were ‘denied’ for some reason).
Checking the speed of my home internet.
I have 50 Mbit internet at home. If I test its speed with speedtest.net I get download speed 56 Mbit/s and upload speed 5.56 Mbit/s that is really good:
and if I download a file with torrent the speed is 6+ MB/s, but if I download a file with HTTP or SFTP the speed can be less than 500 KB/s that is 10 times slower. For example, if I download Ubuntu 18.10 on my VPS the speed is 24 MB/s:
Conversion of S75 charts to GeoJSON with GDAL org2org utility.
The original S57 map consists of the following layers:
ogrinfo E:\temp\ENC_ROOT\US4CA11M\US4CA11M.000
INFO: Open of `E:\temp\ENC_ROOT\US4CA11M\US4CA11M.000'
using driver `S57' successful.
1: DSID (None)
2: Point (Point)
3: Line (Line String)
4: Area (Polygon)
5: Meta (None)
So I was able to convert each layer separately one by one without errors:
ogr2ogr -f GeoJSON US1HA02M-Area.json E:\temp\ENC_ROOT\US1HA02M\US1HA02M.000 Area -lco RFC7946=YES -skipfailures ogr2ogr -f GeoJSON US1HA02M-Point.json E:\temp\ENC_ROOT\US1HA02M\US1HA02M.000 Point -lco RFC7946=YES -skipfailures ogr2ogr -f GeoJSON US1HA02M-Line.json E:\temp\ENC_ROOT\US1HA02M\US1HA02M.000 Line -lco RFC7946=YES -skipfailures ogr2ogr -f GeoJSON US1HA02M-DSID.json E:\temp\ENC_ROOT\US1HA02M\US1HA02M.000 DSID -lco RFC7946=YES -skipfailures Warning 1: No SRS set on layer. Assuming it is long/lat on WGS84 ellipsoid ogr2ogr -f GeoJSON US1HA02M-Meta.json E:\temp\ENC_ROOT\US1HA02M\US1HA02M.000 Meta -lco RFC7946=YES -skipfailures Warning 1: No SRS set on layer. Assuming it is long/lat on WGS84 ellipsoid
Setting up Vue.js development tools on Windows 10.
I installed Node.js and Vue.js cli with the following commands
npm install -g @vue/cli npm install -g @vue/cli-init
and a sample application with
vue init webpack-simple my-vue-app cd my-vue-app npm install npm run dev
Some GTX 1060 3GB cards have low hashrate with Ethash coins.
Ethash algorithm behaves a bit strange on my mining rig with HiveOS and 8 GTX 1060 3GB. Four MSI ARMOR cards with Sumsung memory (OC +1500 mem) have 24+ MH/s, two other cards (OC +600 mem) have 21+ MH/s and two other slow MSI cards (also OC +600 mem) have only 18+ MH/s. I tried to switch risers, PSU, PCI slots and move the cards across rigs, but with no success.
Today I did a pure experiment. I plugged one of the slow cards to a Windows 10 machine with 1000W PSU directly via PCI slot without riser, started Claymore Miner with Musicoin (that has a lower dag size than Ethereum) and got the same result as before, without OC the card had 15+ MH/s (normally it should be 19+ MH/s):
Molten SATA power connector on a mining rig.
I have a mining rig with 8 GTX 1060 3GB connected via risers, the risers are connected via SATA power connectors to Corsair HX850. When the rig stopped working I noticed that one SATA connector on the PSU is molten:
How I built QT 5.11.1 for Android on Windows
I tried to build QT 5.11.1 for Android on Windows, and “configure.bat” completed successfully, but “mingw32-make” failed with with the following error:
No rule to make target 'vulkan/qvulkanfunctions_p.h', needed by '.obj\qvulkaninstance.obj'.
It is the bug fixed in QT 5.11.2 that is planned on August/September 2018.
When I build the master branch and copied the following files from it to \qtbase\src\gui\vulkan manually:
qvulkanfunctions.h qvulkanfunctions_p.cpp qvulkanfunctions_p.h
and started “mingw32-make” again I got another error:
