#benchmarking

[thepersonalwords]

One key habit I adopted is washing or sanitizing of hands every time, especially after using the toilet, before eating or handling food and whenever I go to visit someone in hospital and after leaving the hospital. Also use proper protective clothing in other circumstances like assisting ailing relatives and friends with communicable diseases.

Archibald Marwizi, Making Success Deliberate

[arconinternet]

Speedy (Windows 3.1, J. Lin, 1993)

You can run this Windows 3.1 benchmarking program in your browser here.

[frog707]

This is puzzling.

Tonight I ran some simple performance tests on my laptop, to estimate the performance differential between C++ and Java for Jolt physics simulation. The benchmark I used is called "Ragdoll".

I expected JPH (the C++ app) to achieve slightly more throughput (steps/second) than Jolt JNI (the Java app), for both the Discrete and LinearCast variants of the benchmark.

I ran each curve 3 times (12 runs in total) and plotted the median throughputs.

My expectation was met for < 6 threads and/or the Discrete variant. Between 5 and 6 threads, however the LinearCast curves cross, and for > 5 threads the Java app is faster than C++, but only on LinearCast.

It's hard to imagine anything intrinsic to the apps that would cause the curves to cross like that.

I suspect something running on my laptop interfered with the measurements. Luckily I still have the raw data, so I took a closer look.

2 of the 3 blue runs showed a slight drop in throughput between 5 and 6 threads. The other 10 runs showed substantial increases in throughput between 5 and 6 threads. Coincidence? Maybe.

Tomorrow I'll collect more data.

[valhikes]

Huston Park: to the State Line

Medicine Bow National Forest. The last little bit of wilderness in the cloud and fog, then CDT to the state line. Found a monument.

Medicine Bow National Forest, Wyoming.

The second day backpacking the southern 20 miles of the CDT in Wyoming was leaving the wilderness in the misty rain and getting to the state line. I went searching for 3 state line monuments before settling down to camp by Whiskey Creek.

[andmaybegayer]

I would apologize for being a Computer Building Blog for the past three weeks but it's my blog and I get to choose the temporary obsessions, also I have some asks to answer soon so don't worry.

I ran cinnabar through the Horizon Zero Dawn benchmark on Windows and while it's perfectly capable from a graphics perspective, the *NPC scripts* appears to be what's causing frame dips. I guess that newer games are better optimized for multicore, especially ports of games intended for octa-core consoles.

I noticed it getting bogged down during scenes with lots of people in them, and I assumed that it was down to the increased scene complexity but no, it was the AI tasks! Wild.

My machines in the past always had fairly fast CPUs and a mid-range GPU so I'd never experienced CPU bottlenecking on them before outside of synthetic situations. I guess that the CPU upgrade is next on the list, but I can wait for someone to sell off their 7[567]00 processor cheap now that I have a working system.

[gettothedancing]

The government is ordaining insurance carriers with the undue power to set prices to the detriment of doctors, hospitals, and ultimately, patients.

[eorzeasfrozenknight]

awww Yis so glad my SSD and 1060 are strong enough for ShB