2018년 05월 – 페이지 39 – 지락문화예술공작단

RHSA-2018:1454-1: Critical: dhcp security update

2018-05-15 KENNETH 0

RHSA-2018:1454-1: Critical: dhcp security update Red Hat Enterprise Linux: An update for dhcp is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. CVE-2018-1111 Source: RHSA-2018:1454-1: Critical: dhcp security update

RHSA-2018:1453-1: Critical: dhcp security update

2018-05-15 KENNETH 0

RHSA-2018:1453-1: Critical: dhcp security update Red Hat Enterprise Linux: An update for dhcp is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. CVE-2018-1111 Source: RHSA-2018:1453-1: Critical: dhcp security update

Meet Surface Hub 2

2018-05-15 KENNETH 0

Meet Surface Hub 2 A new culture of work is emerging. One where unlocking the power of the team has never been more important. I see it with our team daily. People coming together, creating together. Making products stronger through collaboration, whether they’re in the same room or separated by thousands of miles. Today’s most effective businesses have a team-based, collaborative culture and place an emphasis on enabling creativity and productivity. In fact, companies that promote collaborative working are five times as likely to be high-performing. It’s not just that how we work is changing, it’s that where we work is changing too. The environment around us is shifting – towards open offices, huddle rooms, and team work spaces – in fact, in three years, half the global workforce will be mobile. It’s an exciting time to be in the [ more… ]

MySQL 8.0: InnoDB Introduces LOB Index For Faster Updates

2018-05-15 KENNETH 0

MySQL 8.0: InnoDB Introduces LOB Index For Faster Updates To support the new feature Partial Update of JSON documents, InnoDB changed the way it stored the large objects (LOBs) in MySQL 8.0. This is because InnoDB does not have a separate JSON data type and stores JSON documents as large objects.… Source: MySQL 8.0: InnoDB Introduces LOB Index For Faster Updates

NumPy와 C++ Extensions의 성능 비교

2018-05-15 KENNETH 0

NumPy와 C++ Extensions의 성능 비교 파이썬은 놀라운 생산성을 발휘하는 언어입니다. 하지만 성능 문제는 늘 발목을 잡게 합니다. 이 문제를 극복하는 방법으로 일반적으로 C Extension을 작성하는 방법이 권장되며, 여기서는 표준 편차를 구하는 함수를 작성하여 순수 파이썬의 성능과 NumPy, 각종 C++ Extensions의 성능을 비교해 보도록 합니다. Python 표준 편차를 구하는 파이썬 코드는 아래와 같이 작성할 수 있습니다. def mean(lst): return sum(lst) / len(lst) def standard_deviation(lst): m = mean(lst) variance = sum([(value – m) ** 2 for value in lst]) return math.sqrt(variance / len(lst)) NumPy NumPy로는 매우 간단하게 한 줄로 처리 가능합니다. np.std(lst) NumPy를 사용하면 코드가 간단해지고, 일반적으로 NumPy는 C로 최적화한 매우 효율적인 라이브러리로 알려져 있으나 NumPy는 싱글 코어와 대형 배열에 최적화된 라이브러리라는 한계가 존재합니다. 실제로 배열의 크기가 100개 이내인 경우 NumPy는 순수 파이썬 구현 보다도 오히려 낮은 성능을 보입니다. C++ Extension 여기서는 C++로 Extension을 작성하여 성능을 최적화 해보도록 합니다. C++로 표준 편차를 [ more… ]