Trevor Keller tkphd

## energy_6a_dx10.csv

          
            time
            free_energy

            
              0
              76.4421

            
              0.05
              179.5

            
              0.1
              179.467

            
              0.15
              179.436

            
              0.2
              179.401

            
              0.25
              179.369

            
              0.3
              179.333

            
              0.35
              179.3

            
              0.4
              179.264

## sandbox.rst

      
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                reStructuredText Sandbox
              
          
    Overview


latex
FiPy is an object oriented, partial differential equation (PDE) solver, written in Python, based on a standard finite volume (FV) approach. The framework has been developed in the Materials Science and Engineering Division (MSED) and Center for Theoretical and


## sandbox.md

      
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                markdown sandbox
              
          
    Test 2: Shuffled Sum

Ideally, the sequence
    1  	     1      1
10× /   + 9× / + 9× / + 9×1 + 9×10 + 9×100 + 9×1000 = 10000.
   1000     100     10

However, due to the same floating point representation problem, variations arise
Similarly, the sequence

  
## .gitignore
*.aux
*.log
*.nav
*.out
*.pdf
*.snm
*.toc


## hiperc-cuda-spinodal.csv

          
            time
            free_energy

            
              0
              326.432

            
              1000
              72.723657

            
              2000
              59.844391

            
              3000
              52.347518

            
              4000
              49.113197

            
              5000.000001
              45.705408

            
              6000.000001
              44.129659

            
              7000.000001
              41.328397

            
              8000.000001
              40.494658

## Problem7-sympy.py
#!/usr/bin/python
# -*- coding: utf-8 -*-

## Sympy code to generate expressions for PFHub Problem 7 (MMS)

from sympy import Symbol, symbols, simplify
from sympy import Eq, sin, cos, cosh, sinh, tanh, sqrt
from sympy.physics.vector import divergence, gradient, ReferenceFrame, time_derivative
from sympy.printing import ccode, pprint
from sympy.abc import kappa, S, t

## EPYC-vs-Xeon.md

      
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                AMD EPYC vs. Intel Xeon Compute Nodes
              
          
    Compute Node Comparison


   Trevor Keller, Ph.D. • NIST MML MSED • May 15, 2018

Description

This document summarizes the side-by-side comparison of dual-socket servers:

2× [AMD EPYC 7601][_epyc] vs. 2× [Intel Xeon E5-2697Av4][_xeon].

The AMD system is a testbed, access to which was provided by [KOI Computers][_koic].

  
## bite-size.tex
% Modifications for @b0rk's excellent Bite Size Networking
% to get a proper 2-sided booklet
\documentclass[12pt]{article}
\usepackage{graphicx,pdfpages}
\usepackage[paperheight=11in,paperwidth=8.5in,margin=0in]{geometry}
\pagestyle{empty}
\begin{document}
\begin{figure}\centering
  \vskip-1cm
  \includegraphics[page=24,width=8.25in,angle=180]{bite-size-networking.pdf}

## Anomalous-Disk-Usage.md

      
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    Bottom line: use du --apparent-size to compare information content (independent of filesystems),
rather than disk utilization (block-size dependent).
                *Distributed Disk Utilization*


BeeGFS
Items
Apparent Size
per Item
On Disk
per Item


hsf_0/
176893
162.0 MB
0.94 KB
100.2 MB
0.58 KB


hsf_1/
165189
152.5 MB
0.94 KB
93.9 MB
0.58 KB


## vector_addition.cu
/* vector_addition.cu
 * Available as a Gist at https://tinyurl.com/y34nfxgc
 */

#include <stdio.h>
#include <cuda.h>

#define N 16

__global__ void vector_addition(int* d_u, int* d_v, int* d_w)
	time	free_energy
	0	76.4421
	0.05	179.5
	0.1	179.467
	0.15	179.436
	0.2	179.401
	0.25	179.369
	0.3	179.333
	0.35	179.3
	0.4	179.264
	time	free_energy
	0	326.432
	1000	72.723657
	2000	59.844391
	3000	52.347518
	4000	49.113197
	5000.000001	45.705408
	6000.000001	44.129659
	7000.000001	41.328397
	8000.000001	40.494658
	#!/usr/bin/python
	# -- coding: utf-8 --

	## Sympy code to generate expressions for PFHub Problem 7 (MMS)

	from sympy import Symbol, symbols, simplify
	from sympy import Eq, sin, cos, cosh, sinh, tanh, sqrt
	from sympy.physics.vector import divergence, gradient, ReferenceFrame, time_derivative
	from sympy.printing import ccode, pprint
	from sympy.abc import kappa, S, t
	% Modifications for @b0rk's excellent Bite Size Networking
	% to get a proper 2-sided booklet
	\documentclass[12pt]{article}
	\usepackage{graphicx,pdfpages}
	\usepackage[paperheight=11in,paperwidth=8.5in,margin=0in]{geometry}
	\pagestyle{empty}
	\begin{document}
	\begin{figure}\centering
	\vskip-1cm
	\includegraphics[page=24,width=8.25in,angle=180]{bite-size-networking.pdf}
BeeGFS	Items	Apparent Size	per Item	On Disk	per Item
`hsf_0/`	176893	162.0 MB	0.94 KB	100.2 MB	0.58 KB
`hsf_1/`	165189	152.5 MB	0.94 KB	93.9 MB	0.58 KB
	/* vector_addition.cu
	* Available as a Gist at https://tinyurl.com/y34nfxgc
	*/

	#include <stdio.h>
	#include <cuda.h>

	#define N 16

	__global__ void vector_addition(int* d_u, int* d_v, int* d_w)