Hermann-SW’s gists

Hermann-SW / phoronix-hpl.txt

Created August 14, 2025 00:52

Phoronix hpl test for Lenovo x3950 X6 system with 8x e7-8880 v3 CPUs

	$ head -3 phoronix-hpl.txt && echo -e "...\n..." && tail -28 phoronix-hpl.txt
	hermann@x3950-X6:~/phoronix-test-suite$ sudo ./install-sh
	-e
	Phoronix Test Suite Installation Completed
	...
	...
	Continuing in 5 seconds or press CTRL-C to stop the testing process.

	HPL Linpack 2.3:
	pts/hpl-1.0.0

Hermann-SW / ml.jscad

Created August 5, 2025 15:52

mona-lisa100K.tsp cities as JSCAD cuboids

This file has been truncated, but you can view the full file.

	/jslint node/
	"use strict";
	const jscad = require("@jscad/modeling");
	const {vec2, vec3} = jscad.maths;
	const {colorize} = jscad.colors;
	const {cylinder, sphere, torus, cuboid} = jscad.primitives;
	const {rotate, scale, translate} = jscad.transforms;

	let edgeCylinder = cylinder({height: 1, radius: 0.01}); // cached
	let vertexSphere = cuboid({size: [0.3,0.3,0.01]});

Hermann-SW / generate_rsa_keys_from_p_and_q.py

Created July 31, 2025 14:39

	""" pylinted, and code formatted with black """
	from math import lcm
	from cryptography.hazmat.primitives.asymmetric import rsa
	from cryptography.hazmat.backends import default_backend
	from cryptography.hazmat.primitives import serialization

	# P and Q are prime factors of largest factored sofar RSA-250
	#
	P = 641352894770715802787901901705773890848250147429434472081168596 * 10**62
	P += 32024532344630238623598752668347708737661925585694639798853367

Hermann-SW / nohup.out.RSA-155

Created July 28, 2025 10:26

cado-nfs.py nohup output for factoring RSA-155 in 25:13h in total on 16C/32T AMD 7950X CPU with 32GB RAM

This file has been truncated, but you can view the full file.

	[32;1mInfo[0m:root: Using default parameter file ./parameters/factor/params.c155
	[32;1mInfo[0m:root: No database exists yet
	[32;1mInfo[0m:root: Created temporary directory /tmp/cado.10b02n9l
	[32;1mInfo[0m:Database: Database URI is db:sqlite3:///tmp/cado.10b02n9l/c155.db
	[32;1mInfo[0m:Database: Opened connection to database /tmp/cado.10b02n9l/c155.db
	[32;1mInfo[0m:root: Set tasks.linalg.bwc.threads=16 based on detected physical cores
	[32;1mInfo[0m:root: Set tasks.threads=32 based on detected logical cpus
	[32;1mInfo[0m:root: tasks.threads = 32 [via tasks.threads]
	[32;1mInfo[0m:root: tasks.polyselect.threads = 2 [via tasks.polyselect.threads]
	[32;1mInfo[0m:root: tasks.sieve.las.threads = 2 [via tasks.sieve.las.threads]

Hermann-SW / hip-magic.cpp

Created July 7, 2025 19:23

Compare single thread pure integer performance of CPUs and [AMD] GPUs

	/*
	Compare single thread pure integer performance of CPUs and [AMD] GPUs

	hipcc hip-magic.hip
	cpplint --filter=-legal/copyright hip-magic.hip.cpp
	cppcheck --enable=all --suppress=missingIncludeSystem hip-magic.hip.cpp --check-config
	*/
	#include <sys/time.h>
	#include <stdint.h>
	#include <hip/hip_runtime.h>

Hermann-SW / dummy.txt

Last active July 10, 2025 19:38

OpenCL example notes

see comments

Hermann-SW / pcb442.cpp

Last active July 21, 2025 11:59

TSP Ruin and Recreate greedy implementation with random+sequential+radial ruins

	//
	// Developemnt of this gist is stopped, no further updates.
	//
	// This is the equivalent of this gist in new RR repo:
	// https://github.com/Hermann-SW/RR/blob/main/tsp/greedy.cpp
	//
	// Code is split up, and a loader was added allowing for differnt problems.
	// In addition that repo has 111 TSP problems with 108 corresponding
	// optimal tours.
	/*

Hermann-SW / range_http.c

Created June 23, 2025 17:38

single threaded http server for distribution of disjoint bases from a range to geneferg on many CPUs/GPUs

	/* based on:
	https://medium.com/@justup1080/tutorial-creating-a-minimalist-http-server-in-c-2303d140c725

	gcc -Wall -Wextra -pedantic range_http.c -o range_http
	*/
	#include <stdio.h>
	#include <stdlib.h>
	#include <unistd.h>
	#include <string.h>
	#include <netinet/in.h>

Hermann-SW / amdgpu_temp

Created June 11, 2025 20:08

Table display of three temperatures for all installed AMD GPUs every second

	#!/bin/bash
	d=$(find /sys/class/drm/card?/device/unique_id \| wc --l)
	printf "%9s" "$(hostname)"

	for((c=0;c<d;++c))
	do
	printf "\|%s" "$(cat /sys/class/drm/card$c/device/unique_id)"
	done
	echo "\|"

Hermann-SW / demo_executions.md

Last active June 1, 2025 09:47

Fast discrete log() allows factoring RSA semiprimes easily

See comment below.

Hermann Stamm-Wilbrandt Hermann-SW