vguerra

#!/usr/bin/awk -f

# This program is a copy of guff, a plot device. https://github.com/silentbicycle/guff
# My copy here is written in awk instead of C, has no compelling benefit.
# Public domain. @thingskatedid

# Run as awk -v x=xyz ... or env variables for stuff?
# Assumptions: the data is evenly spaced along the x-axis

# TODO: moving average

vguerra

diff --git a/utils/update_checkout/update_checkout/update_checkout.py b/utils/update_checkout/update_checkout/update_checkout.py
index 56e7ea24d4..54fcb18107 100755
--- a/utils/update_checkout/update_checkout/update_checkout.py
+++ b/utils/update_checkout/update_checkout/update_checkout.py
@@ -117,17 +117,17 @@ def update_single_repository(pool_args):
                 except Exception:
                     pass
 
-            if checkout_target:
-                shell.run(['git', 'status', '--porcelain', '-uno'],

vguerra

Ex 1

document = sc.textFile("hdfs:///user/user172/5000-8.txt")
wordCounts = document.flatMap(lambda line: line.split()).map(lambda word: (word, 1)).reduceByKey(lambda left, right: left + right)
wordCounts.saveAsTextFile("hdfs:///user/user172/tp/wordcount")

Ex 2

vguerra

(source_file
  (top_level_code_decl
    (brace_stmt
      (defer_stmt
        (func_decl implicit "$defer()" interface type='() -> ()' access=fileprivate
          (parameter_list)
          (brace_stmt
            (call_expr type='()' location=../../../../examples/defer.swift:2:5 range=[../../../../examples/defer.swift:2:5 - line:2:28] nothrow arg_labels=_:
              (declref_expr type='(Any..., String, String) -> ()' location=../../../../examples/defer.swift:2:5 range=[../../../../examples/defer.swift:2:5 - line:2:5] decl=Swift.(file).print(_:separator:terminator:) function_ref=single)
              (tuple_shuffle_expr implicit type='(Any..., separator: String, terminator: String)' location=../../../../examples/defer.swift:2:11 range=[../../../../examples/defer.swift:2:10 - line:2:28] scalar_to_tuple elements=[-2, -1, -1] variadic_sources=[0] default_args_owner=Swift.(file).print(_:separator:terminator:)

vguerra

Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

vguerra

# Example using oacs-5-8 branch. 

# tag first the desired branch
cvs checkout -r oacs-5-8 openacs-4
cd openacs-4
cvs tag -F vg-merge-oacs-5-8-date

# you can update the current checkout with
cvs up -A 

vguerra

git log --format=%ae |sort | uniq -c| sort -nr| less

vguerra

#include <stdio.h>

int fun() {
  int a = 1; 
  int *p = &a; 
  while (*p != 10) {p++;}
  *p = 30;
  return 0;
}

vguerra

#include <iostream>
#include <string>

template <bool B>
void Log(std::ostream& out, const std::string& str) {
  if (B) {
    out << str << "\n";
  }

vguerra

// Victor Guerra <vguerra@gmail.com>
// 2014-09-26

#include <cstdlib>
#include <cassert>

#include <iostream>
#include <algorithm>
#include <vector>
#include <numeric>