Chapter 1219 Dual-Core Processor

After explaining to Li Sisi, Chen Changliu changed his original work plan and walked out of the office to the wafer division.

Liu Yang from the wafer division didn't know that Qualcomm had given the first global launch of the wafer to Xikang Technology. He only knew that Qualcomm delayed the delivery to the flower grower.

Seeing Chen Changliu coming, he thought he wanted to know about Huang Zhang and his technical team testing MediaTek's mobile phone wafer.

"Boss, I don't think this MediaTek wafer is very good. Not only is it still single-core, but the single-core frequency is less than 1Ghz, which is a bit different from the frequency of Qualcomm's single-core mobile phone this year. After all, Qualcomm's single-core frequency is 1.2GHz.

I think it's not as good as the dual-core wafer we developed before, although the single-core frequency is only 800MHz, and the power consumption is not well controlled, and it is easier to heat up than the MediaTek phone.

But the performance is definitely better than the MediaTek one."

Yes, Liu Yang wanted to recommend the dual-core processor independently developed by the wafer division to Chen Changliu.

During the days when Qualcomm delayed the supply, Liu Yang suggested to Chen Changliu more than once, but all of them were rejected by Chen Changliu.

Chen Changliu rejected it not only because he had a supply contract with Qualcomm in hand, but also because the purchase volume was there and Qualcomm wafers must be used.

In his opinion, the first smartphone wafer launched by a company is not a dual-core processor but a quad-core processor.

The reason why he wanted to use a quad-core processor right away was to buy time for Huacheng International.

Because when the mobile phone wafers independently developed by Zhonghuajia are not worse than those of Qualcomm and other mobile phone wafers, the more mobile phones of Zhonghuajia occupy the market, the greater the risk of being sanctioned.

Because in the eyes of the United States, Zhonghuajia has become uncontrollable with its first-class mobile phone wafers.

And Chen Changliu also hopes to reach the same level as other mobile phone manufacturers right away, so that the flagship mobile phone of Zhonghuajia Technology Co., Ltd. will not have the situation where the performance cannot keep up with other brands.

Chen Changliu did not answer Liu Yang directly, but asked:

"Can't the frequency of this dual-core processor reach 1GHz for a single core?"

When Liu Yang heard Chen Changliu's words, his eyes lit up, and at the same time he showed a sad expression.

"Boss, you know, there are many technical difficulties in the transition from single-core to dual-core mobile phone chips.

For example, in terms of architecture design, a single-core chip has only one core, and all tasks are handled by this core, so there is no problem of coordination between cores.

In dual-core chips, two cores need to work at the same time, which requires the design of efficient architecture and scheduling algorithms.

Ensure that different cores can reasonably allocate tasks and work together to avoid problems such as uneven task allocation, mutual waiting or conflict between cores, so as to give full play to the performance advantages of multi-core.

In addition, in single-core chips, cache management is relatively simple because only one core accesses the cache.

But in dual-core chips, both cores may access and modify shared cache data, which brings about the problem of cache consistency.

For example If the cache data of different cores are inconsistent, it will lead to errors in the calculation results. Therefore, it is necessary to design complex cache consistency protocols and mechanisms to ensure that the cache data seen by multiple cores is consistent, which increases the difficulty and complexity of chip design.

This is only a dual-core problem. According to the quad-core processor you set, these difficulties will be much higher.

However, we have now figured out our own architecture and scheduling algorithm, but it takes time. Give me another half a year, and we can design a dual-core chip with a single-core frequency of 1GHz.

Give us another year, and we can slowly control the quad-core mobile phone chip. "

Looking at the confident Liu Yang, Chen Changliu couldn't help but smile bitterly.

According to his original plan, there must be time for Liu Yang, but now he can't even give Liu Yang half a year.

He motioned Liu Yang to continue, and Liu Yang nodded.

"One is power consumption management.

As the number of cores increases, the total power consumption of the chip will also increase accordingly.

In the case of single core, power consumption management mainly focuses on optimizing the power consumption of a single core.

When it comes to dual-core or quad-core, not only should the power consumption of a single core be optimized to enable it to work efficiently at a lower voltage and frequency, but the overall power consumption when multiple cores work at the same time should also be considered.

If the power consumption of a dual-core chip is too high, it will cause serious heating of the mobile phone, shortened battery life, and other problems, affecting the user experience.

In addition, the dynamic power consumption management of a single-core chip is relatively simple, because only the working status of one core needs to be monitored and adjusted.

In a multi-core chip , it is necessary to monitor the workload and status of each core in real time, and dynamically adjust the voltage and frequency of each core according to different application scenarios and requirements to achieve the best power consumption performance balance.

This requires more accurate power consumption monitoring circuits and smarter power consumption management algorithms.

This is also the reason why we cannot achieve 1GHz per core now, because in the power consumption management algorithm, we can only achieve the best balance point at 800MHz.

...........”

Liu Yang talked about many aspects of the problem. Now Chen Changliu is no longer ignorant of these professional things. Although he does not understand research and development, he understands where the difficulty lies.

After Liu Yang finished speaking, Chen Changliu asked directly:

"So if we use the current dual-core processor with a single core of only 800MHz, can it outperform Qualcomm's single-core 1.2GHz processor?"

Liu Yang sighed and said:

"The performance can only be said to be slightly better, but the advantage is not too great, and the power consumption is not as good as Qualcomm's single-core processor.

It can't compare in terms of battery life or heat generation."

Liu Yang's words made Chen Changliu frown even deeper.

Yes, the high-end mobile phone chips launched by Qualcomm this year are still single-core processors.

According to Chen Changliu, now all mobile phone manufacturers have actually developed dual-core processors, but there are various problems, and the user experience is not as good as a high-frequency single-core processor.

So in 2010, mobile phones are still dominated by single-core processors, and dual-core processors will not be widely used until next year.

"If we insist on making the single-core frequency 1GHz, can we suppress it by increasing the heat dissipation area of ​​the copper tube while sacrificing the thickness of the mobile phone?

Can other technical aspects keep up?"

Chen Changliu's words made Liu Yang's face show an ecstatic expression.

Because what Chen Changliu said means that if the wafer division can do it, then this wafer will be used in its own products.

How long have Liu Yang and the entire wafer division waited for this moment?

It is not that the wafer division has no achievements over the years. The MP3 wafer has been continuously upgraded, but the technical difficulty of the MP3 wafer is really a piece of cake for the wafer division.

Only the Pixiu series of feature phone wafers are used in mobile phone wafers.

Smart phone wafers have gone from developing single-core processors to developing dual-core and quad-core processors.

Although the performance parameters of the single-core processor developed by itself last year are not much worse than those of the mainstream, he once thought that it could be installed in his own products.

But the boss denied it. He said that there is a supply contract with Qualcomm now, and then he will directly start from single-core to multi-core development.

He agrees with the design of the multi-core processor proposed by the boss, and also agrees with the boss's plan. He knows that sometimes individuals have to compromise with the plan of the entire company.

But in his heart, he still longs to be able to install it in his own products.

At first, Pixiu 910 was the first mobile phone chip in China, but now the first domestically developed smart phone chip has been snatched away by someone, and it should have belonged to his own chip division.

Now that he heard that his boss has applied dual-core mobile phones to his own product line, it would be strange if he is not ecstatic.

PS: The typos will be corrected later.