taeguk

hpx::future<std::uint64_t> fibonacci(std::uint64_t n, std::string prefix)
{
    if (n < 2) return hpx::make_ready_future(n);
    if (n < threshold) return hpx::make_ready_future(fibonacci_serial(n));

	auto new_prefix = prefix + "->" + std::to_string(n);
	std::cout << "[Debug] " << new_prefix << std::endl;

    hpx::future<std::uint64_t> lhs_future = hpx::async(&fibonacci, n-1, new_prefix);
	hpx::future<std::uint64_t> rhs_future = fibonacci(n - 2, new_prefix);

taeguk

Process Context : context of kernel flow through system call of user process
Interrupt Context : context of kernel flow through interrupt by I/O devices.

Kernel Control Flow
 - Process Context (by system call)
 - Interrupt Context (by interrupt)
 
 kmalloc GFP_KERNEL
 sleep 
 

taeguk

git filter-branch --env-filter 'export GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"'

taeguk

Comparison Summary

Feature	C++11/14	Rust	Swift3	Go
Memory Management	Manual (In convection, Use Smart Pointer)	Manual (But, compiler checks correctness.)	ARC(Automatic Reference Counting)	Garbage Collection
Platform	Many	Windows, Linux, OS X	OSX, Ubuntu	Windows, Linux, OS X, FreeBSD, Plan 9
Implementations	GCC, Clang, MSVC, ...	www.rust-lang.org	https://swift.org	https://golang.org

taeguk

: '
Sogang University.
Embedded Computer Architecture Class.
2016.
Helpful Bash Script HOMEWORK #3
        Made by taeguk (http://taeguk.me).
'

##### Problem 1

taeguk

#include <iostream>
#include <atomic>
#include <cstddef>
#include <limits>
#include <cstdint>

using namespace std;

class BaseIndexD32
{

taeguk

CUDA ILP -> by compiler? or by hardware?
CUDA -> in-order? or out-of-order?

Occupancy = # of active warps / # of max resident warps
Occupancy is determined from block size, register usage per a thread, shared memory usage per a thread.
shared memory usage per a thread = shared memory usage in a block / block size.

# of blocks >= # of SMs is good.

taeguk

transient  : TCP
 - connection
persistent : scalability good

taeguk

idempotent REQ = self-contained REQ (Request containes the state itself.)
At least Once RPC Call Semantic needs idempotent REQ.

taeguk

find . -regextype posix-egrep -regex ".*\.(py|sh|proto)$" -not -path "./src/dist_system/protocol/pb/*" | xargs wc -l | awk '{s+=$1} END {print s}'