SC046 performance improvement, dual-machine clustering

At present, the most urgent problem that needs to be solved is the problem of insufficient computing power of Butler's load-bearing equipment. Pen, fun, pavilion www. biquge。 info

Because of this problem, Nanlin Guiyi's mind has a lot of short-term plans and long-term plans, all of which cannot be realized, so he can only wait for the right time to start the plan again.

However, now Nanlin Guiyi has received $900,000 in hot money and is ready to invest $200,000 to improve Butler's load-bearing equipment. According to Nanlin's plan, we will directly purchase the latest top-level server CPU released by intel this year and build an 8way top-level server.

This level of server is already the top private server!

If you need a more powerful server, you need deep customization services to build your own supercomputer. Nanlin Guiyi is not well funded, and it will definitely not be able to build its own supercomputer.

Nanlin Guiyi can purchase two top-of-the-line private servers to form a two-machine cluster. In addition, Nanlin Guiyi has a little miscalculation, the investment in the two-machine cluster is not only 200,000 US dollars, but exceeds the budget.

Because, Nanlin Guiyi undercounted the storage equipment and UPS uninterruptible power supply equipment. Once Butler is running in a two-machine cluster, UPS equipment is definitely needed.

Otherwise, what if Butler has a logical error in the event of an unexpected power outage?

There is currently no way to fix Butler's underlying core source code!

In order to avoid accidents in Butler, UPS uninterruptible power supply equipment must be owned. Ultra-high-speed storage equipment is also a must. For example, enterprise-class SSDs are definitely standard.

These two budgets will increase by at least $50,000!

This investment is definitely worth it. Because, once Nanlin Guiyi invests in two top private servers, Butler's computing power resources will be greatly improved.

At present, Butler has less than 0.5 tflops of computing power. That is, the speed of floating-point operations per second is less than 500 billion times. However, the floating-point operation speed of large supercomputers can reach a quadrillion of times at every turn!

It's just 500 billion times, it's really not enough to watch!

Because of such a weak computing power, Butler's capabilities have been severely limited, and once the top-of-the-line private servers updated by Nanlin Guiyi are put into use, Butler will have access to more powerful computing power resources.

According to the parameters of Xeon.E7-8870 server CPU, each CPU has 10 physical cores, 20 logical threads, and a system contains 8 Xeon.E7-8870 server CPUs.

Then, the basic computing power of a system has 3.84 tflops, and the peak computing power has reached the level of 4.48 tflops.

The so-called basic computing power and peak computing power are actually because the Xeon.E7-8870 server CPU has different working frequencies. The minimum base frequency is 2400MHz and the maximum overclocking frequency is 2800MHz.

Therefore, when the Xeon.E7-8870 server CPU works at different frequencies, it will generate different computing resources.

Nanlin Guiyi is ready to build two sets of 8way top private servers, which are connected in series to form a two-machine cluster, and the computing power that Butler can obtain is at least more than 7tflops.

Why at least 7tflops?

This is because when a two-machine cluster is connected in series, part of the performance will be lost, and the best performance cannot be played. This situation is also serious in supercomputers.

According to the different design schemes of supercomputers, supporting controls, and supercomputer systems, there is a certain gap between the specific performance and the design performance.

After Nanlin Guiyi made up his mind in his heart, he yawned, he glanced at the time, it was close to two o'clock in the morning, and Nanlin Guiyi was not ready to stay up all night to write a program for asynchronous parallel computing schemes.

Early the next morning, Nanbayashi Guiyi came to the Kasai Police Station early, and as soon as he sat down in the laboratory on the second floor, Chiba Nanami appeared.

"Officer Nanlin, our group will have a meeting in Observation Room No. 2 in ten minutes, you can prepare." Chiba Nanami informed Nanlin Guiyi and turned to leave.

Chiba Nanami returned to the form of an iceberg with a cold and indifferent attitude.

However, Nanami Chiba's attitude made Nanbayashi Guiichi very satisfied. Because, Chiba Nanami doesn't give a good face, which means that she doesn't want to 'scourge' Nanlin Guiyi.

If Chiba Nanami still gives Nanlin Guiyi a good face, then, Nanlin Guiyi will think that Chiba Nanami is completely helpless and willing to fall!

"Officer Chiba, is there a case?" Nanbayashi Guiyi looked at the back of Nanami Chiba and asked in a loud voice.

Chiba Nanami didn't answer Nanbayashi Guiyi, as if he hadn't heard, and left the physical evidence technology laboratory on the second floor directly.

Nanlin Guiyi shrugged his shoulders slightly, self-deprecating to hide his embarrassment.

Subsequently, Nanlin Guiyi looked at today's physical evidence identification work, and there was only one identification work for analyzing fibers. Although there is only one job, it is cumbersome to identify the fiber composition, and even more troublesome is to trace the source of the fiber.

For example, the fiber composition of a piece of carpet, following the footprints of the murderer, was left at the scene. The police found the fibers and handed them over to the Forensic Technology Laboratory for analysis.

Then, the staff of the physical evidence technology laboratory should roughly determine the source of the fiber according to the composition of the fiber, so as to confirm the scope of the suspect, and so on.

This physical evidence identification work comes from the Komatsugawa Police Station, and the unfortunate Komatsugawa Police Station has never recruited a physical evidence technician, always with the help of the Kasai Police Station and the Koiwa Police Station.

The three police stations are located in Edogawa Ward, and they often cooperate with each other. When Nanbayashi Guiichi did not join the Kasai Police Station, the forensic technicians at the Koiwa Police Station were as busy as dogs every day.

Ten minutes later, Nanbayashi Guiichi put down his work and went downstairs to Observation Room No. 2 to participate in the meeting of the search division between Chiba Nanami and Fukuda Kato.

In the second observation room, Chiba Nanami and Fukuda Kato were already waiting for Nanbayashi Guiyi, Nanbayashi Guiyi smiled apologetically, expressed his apologies, and then asked, "Officer Chiba, do you have any action in your group?" ”

Nanlin Guiyi used the phrase 'your group' instead of 'our group', which meant to exclude oneself and indicate that he would not be part of the investigation team of the Search Division.

Fukuda Kato said with a smile, "Guiyi, you are also a member of our group, let's discuss the case of the Yachimaru Warehouse, how we can continue to investigate." ”

Nanlin Guiyi was stunned, "The case of the Eight Pill Warehouse? Need us to investigate? That's not the jurisdiction of the Fukagawa Police Station? ”

Chiba Nanami said with a calm face, "Our store has already issued an order, the three police stations in Koto District, plus us, must solve the case of the Yachimaru warehouse. The time limit is one month! ”

"What if it can't be detected within a month?" Nan Lin Guiyi asked a little 'stupidly'.

————

New book uploads, referral tickets needed, member clicks, favorites, etc., thank you for all your support!

————

Pay attention to the public: Qms5120 to learn more about the behind-the-scenes footage of the works and authors, as well as popularize computer knowledge from time to time.

————