AMD Announces Project SkyBridge: Pin-Compatible ARM and x86 SoCs in 2015, Android Support This morning AMD decided to provide an update on its CPU core/SoC roadmap, particularly as it pertains to the ARM side of the business. AMD already committed to releasing a 28nm 8-core Cortex A57 based Opteron SoC this year. That particular SoC is aimed at the enterprise exclusively and doesn't ship with an o
Linux の連続稼働時間が 208.5 日を過ぎた段階で突如 Kernel Panic を引き起こすという過激な挙動で2011年の年の瀬に話題となった "旧208.5日問題" ですが、あれから二年が経った今、Linux Kernel 内の bug と Intel Xeon CPU の bug の合わせ技により再度類似の不具合が発生することが分かっています。 旧 208.5 日問題の発生原理に関しては以下の blog が参考になります。 okkyの銀河制圧奇譚 : sched_clock() overflow after 208.5 days in Linux Kernel 追記(2014/1/4) 新208.5日問題の簡易チェックツールを作成しました。よろしければお使い下さい。 tsc_checker - 新208.5日問題簡易チェックツール また、Linux Kernel における時間
Once a niche, high-performance computing has become a key growth area for the tech industry. Intel’s announcements at Supercomputing 13 today---including new details of a completely redesigned Many Integrated Core processor—show just how important technical computing has become. High-performance computing, once a niche area catering to academia and government, has become a key growth area for the
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Pages: 1 2 3 4 Two of my personal areas of interest and expertise are speculative multithreading (SpMT) and transactional memory (or TM). Both are techniques designed to make multi-core processors and parallel programming more amenable to developers. For several years, I was the co-founder of Strandera, a start up that was developing speculative multithreading, based on transactional memory and dy
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Coherency Leaps Forward at Intel CSI is a switched fabric and a natural fit for cache coherent non-uniform memory architectures (ccNUMA). However, simply recycling Intel’s existing MESI protocol and grafting it onto a ccNUMA system is far from efficient. The MESI protocol complements Intel’s older bus-based architecture and elegantly enforces coherency. But
Making Sense of the Intel Haswell Transactional Synchronization eXtensions TSX Performance Ravi and Marting gave some vague but still rather interesting performance data: According to Intel, using an application that previously used a coarse grained lock (like the older MyISAM storage engines of MySQL) together with a TSX enabled library should improve scaling spectacularly. What's interesting is
First Alleged Benchmark Results of Intel Core i “Haswell” Processor Hit the Web.(X-bit labs) Intel Haswell Engineering Sample Benchmarked Against 3770K in a Clock-to-Clock Comparison(WCCF Tech) Intel "Haswell" Quad-Core CPU Benchmarked, Compared Clock-for-Clock with "Ivy Bridge"(techPowerUp!) Haswell versus Ivy Bridge clock for clock performance(Guru3D) Intelは第4世代Core i seriesとなる“Haswell”を約半年後にリリー
Product Overview This emulator is called Intel® Software Development Emulator or Intel® SDE, for short. The current version is 9.38 and was released on April 18, 2024. This version corresponds to the Intel® Architecture Instruction Set Extensions Programming Reference revision 319433-052, the Intel® Advanced Vector Extensions 10 (Intel® AVX10) architecture specification, and the Intel® Advanced Pe
Using Intel.com Search You can easily search the entire Intel.com site in several ways. Brand Name: Core i9 Document Number: 123456 Code Name: Emerald Rapids Special Operators: “Ice Lake”, Ice AND Lake, Ice OR Lake, Ice* Quick Links You can also try the quick links below to see results for most popular searches. Product Information Support Drivers & Software
作成日:2012.11.17 更新履歴 (2012.11.17) 作成。 (2017.12.24) Equal Ordered の疑似プログラムが誤っていたのを修正。 目次 命令の解説 要素の型(Byte or Word / Signed or Unsigned) 比較操作(Aggregation Operation) 文字列の終わり以降の扱い ビット反転(Polarity) Output Selection フラグ変化 余談 コメント 命令の解説 PCMPESTRI、PCMPESTRM、PCMPISTRI、PCMPISTRM の 4 命令は SSE 4.2 からサポートされた文字列比較のための命令だ。 この命令グループには String and Text Processing Instructions という名前がついているが、この文章ではまとめて PCMPxSTRx 命令と呼ぶことにす
預金の引き出しでは、残高確認→現金の引き出し→残高の更新という一連の処理を他のプロセサの処理からの干渉なく行う必要がある。 プロセサ1の引き出しの処理で、残高の更新を行う前に、他のプロセサが引き出し前の残高を読んで、引き出し、残高更新を行ってしまうと、処理がおかしくなってしまう。このため、Lockというメカニズムを使って、1つのプロセサがこの一連の処理を終わるまで、他のプロセサはこの処理を開始できないようにするというのが一般的なやり方である。しかし、これでは複数のプロセサがあっても一時には1つのプロセサしか使えず、効率が悪い。 プロセサ1が口座A、プロセサ2が口座Bの引き出し処理を並行に実行するのは問題ないので、口座ごとにLockを設ければこの問題は解決する。しかし、口座Aから口座Bへの振込をする場合は両方の口座のLockを獲得する必要がある。この時、プロセサ1が口座AからBへの振込のため
Overview These manuals describe the architecture and programming environment of the Intel® 64 and IA-32 architectures. Electronic versions of these documents allow you to quickly get the information you need and print only the pages you want. The Intel® 64 and IA-32 architectures software developer's manuals are now available for download via one combined volume, a four-volume set, or a ten-volume
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