什么是Deepytorch Training（训练加速）

多机CPU-Reduce：该优化继承了单机内CPU-Reduce高效的异步流水线，并将跨机Socket通信也设计为流水线形态，实现多机通信全过程流水化，有效减少通信延迟，提高整体训练性能。例如，在通信量较大的Transformer-based模型的多机训练场景下，...

基于eRDMA增强型实例部署AI训练集群

在NCCL底层通信链接上，有多种不同的传输方式，例如单机内部多卡P2P通信以及多机上的传统socket通信（如VPC网络）和高性能的InfiniBand（IB）通信，其中eRDMA是一种基于RDMA的传输方式，具有极低的延迟，并且在性能上接近RDMA网络的优势。...

多语言API访问

云数据库HBase标准版支持Thrift多语言访问，Thrift是云数据库HBase标准版实例中的一种服务组件，基于Apache Thrift（多语言支持的通信框架）开发。本文介绍通过Thrift多语言访问云数据库HBase标准版实例。前提条件 已创建HBase标准版实例，...

常见问题列表

在有些平台上,能被开启的socket数量,有上限的 检查当前的流程是否有socket的泄漏,有些socket使用完后没有close 如果流程正常,确需同时建立多个socket,请调整socket的个数上限 MQTT连接-35/MQTT_CONNACK_BAD_USERDATA_ERROR 解释 发起MQTT...

ST_Zmflag

示例 不同类型的返回值：SELECT ST_Zmflag('POINT(0 1)':geometry)as_2D,ST_Zmflag('POINTM(0 1 2)':geometry)as_3DM,ST_Zmflag('POINT(0 1 2)':geometry)as_3DZ,ST_Zmflag('POINT(0 1 2 3)':geometry)as_4D;2d|_3dm|_3dz|_4d-+-+-+-0|1|2|...

ST_Zmflag

示例 不同类型的返回值：SELECT ST_Zmflag('POINT(0 1)':geometry)as_2D,ST_Zmflag('POINTM(0 1 2)':geometry)as_3DM,ST_Zmflag('POINT(0 1 2)':geometry)as_3DZ,ST_Zmflag('POINT(0 1 2 3)':geometry)as_4D;2d|_3dm|_3dz|_4d-+-+-+-0|1|2|...

ST_Zmflag

示例 不同类型的返回值：SELECT ST_Zmflag('POINT(0 1)':geometry)as_2D,ST_Zmflag('POINTM(0 1 2)':geometry)as_3DM,ST_Zmflag('POINT(0 1 2)':geometry)as_3DZ,ST_Zmflag('POINT(0 1 2 3)':geometry)as_4D;2d|_3dm|_3dz|_4d-+-+-+-0|1|2|...

逻辑回归二分类

cast(0 as double)as f1,cast(0 as double)as f2,cast(1 as double)as f3,cast(1 as bigint)as label from dual union all select cast(1 as double)as f0,cast(0 as double)as f1,cast(0 as double)as f2,cast(0 as double)as f3,cast(0 ...

GBDT回归

cast(0 as double)as f1,cast(0 as double)as f2,cast(1 as double)as f3,cast(1 as bigint)as label from dual union all select cast(1 as double)as f0,cast(0 as double)as f1,cast(0 as double)as f2,cast(0 as double)as f3,cast(0 ...

GBDT二分类

cast(0 as double)as f1,cast(0 as double)as f2,cast(1 as double)as f3,cast(1 as bigint)as label from dual union all select cast(1 as double)as f0,cast(0 as double)as f1,cast(0 as double)as f2,cast(0 as double)as f3,cast(0 ...

相交类算子

示例 WITH box AS(SELECT ST_MakeBox3d(0,0,0,5,5,5)a,ST_MakeBox3dt(6,6,3,'2010-04-12 00:00:00',8,8,5,'2013-02-01 00:00:00')b)SELECT a/b AS OpZ,a#b AS OpT,a&b AS Op2D,a&b AS Op3d,a&b AS Op2DT,a&b AS Op3DT from box;opz|opt|op2...

相交类算子

示例 WITH box AS(SELECT ST_MakeBox3d(0,0,0,5,5,5)a,ST_MakeBox3dt(6,6,3,'2010-04-12 00:00:00',8,8,5,'2013-02-01 00:00:00')b)SELECT a/b AS OpZ,a#b AS OpT,a&b AS Op2D,a&b AS Op3d,a&b AS Op2DT,a&b AS Op3DT from box;opz|opt|op2...

相交类算子

示例 WITH box AS(SELECT ST_MakeBox3d(0,0,0,5,5,5)a,ST_MakeBox3dt(6,6,3,'2010-04-12 00:00:00',8,8,5,'2013-02-01 00:00:00')b)SELECT a/b AS OpZ,a#b AS OpT,a&b AS Op2D,a&b AS Op3d,a&b AS Op2DT,a&b AS Op3DT from box;opz|opt|op2...

相交类算子

示例 WITH box AS(SELECT ST_MakeBox3d(0,0,0,5,5,5)a,ST_MakeBox3dt(6,6,3,'2010-04-12 00:00:00',8,8,5,'2013-02-01 00:00:00')b)SELECT a/b AS OpZ,a#b AS OpT,a&b AS Op2D,a&b AS Op3d,a&b AS Op2DT,a&b AS Op3DT from box;opz|opt|op2...

逻辑回归多分类

cast(1 as double)as f1,cast(0 as double)as f2,cast(0 as double)as f3,cast(0 as bigint)as label from dual union all select cast(0 as double)as f0,cast(0 as double)as f1,cast(1 as double)as f2,cast(0 as double)as f3,cast(2 ...

包含算子

0,0,'2010-01-01 00:00:00',10,10,10,'2012-01-01 00:00:00')a,ST_MakeBox3dt(6,6,3,'2010-01-01 00:00:00',8,8,5,'2013-01-01 00:00:00')b)SELECT a/>/b AS OpZ,a#>#b AS OpT,a@>b AS Op2D,a@>b AS Op3D,a@>b AS Op2DT,a@>b AS Op3DT from...

包含算子

0,0,'2010-01-01 00:00:00',10,10,10,'2012-01-01 00:00:00')a,ST_MakeBox3dt(6,6,3,'2010-01-01 00:00:00',8,8,5,'2013-01-01 00:00:00')b)SELECT a/>/b AS OpZ,a#>#b AS OpT,a@>b AS Op2D,a@>b AS Op3D,a@>b AS Op2DT,a@>b AS Op3DT from...

包含算子

0,0,'2010-01-01 00:00:00',10,10,10,'2012-01-01 00:00:00')a,ST_MakeBox3dt(6,6,3,'2010-01-01 00:00:00',8,8,5,'2013-01-01 00:00:00')b)SELECT a/>/b AS OpZ,a#>#b AS OpT,a@>b AS Op2D,a@>b AS Op3D,a@>b AS Op2DT,a@>b AS Op3DT from...

包含算子

0,0,'2010-01-01 00:00:00',10,10,10,'2012-01-01 00:00:00')a,ST_MakeBox3dt(6,6,3,'2010-01-01 00:00:00',8,8,5,'2013-01-01 00:00:00')b)SELECT a/>/b AS OpZ,a#>#b AS OpT,a@>b AS Op2D,a@>b AS Op3D,a@>b AS Op2DT,a@>b AS Op3DT from...

被包含算子

0,0,'2010-01-01 00:00:00',10,10,10,'2012-01-01 00:00:00')a,ST_MakeBox3dt(6,6,3,'2010-01-01 00:00:00',8,8,5,'2013-01-01 00:00:00')b)SELECT b/<@/ aAS OpZ,b#<@# aAS OpT,b<@ aAS Op2D,b</@ aAS Op3D,b<#@ aAS Op2DT,b</#@ aAS Op3DT from...

被包含算子

0,0,'2010-01-01 00:00:00',10,10,10,'2012-01-01 00:00:00')a,ST_MakeBox3dt(6,6,3,'2010-01-01 00:00:00',8,8,5,'2013-01-01 00:00:00')b)SELECT b/<@/ aAS OpZ,b#<@# aAS OpT,b<@ aAS Op2D,b</@ aAS Op3D,b<#@ aAS Op2DT,b</#@ aAS Op3DT from...

被包含算子

0,0,'2010-01-01 00:00:00',10,10,10,'2012-01-01 00:00:00')a,ST_MakeBox3dt(6,6,3,'2010-01-01 00:00:00',8,8,5,'2013-01-01 00:00:00')b)SELECT b/<@/ aAS OpZ,b#<@# aAS OpT,b<@ aAS Op2D,b</@ aAS Op3D,b<#@ aAS Op2DT,b</#@ aAS Op3DT from...

被包含算子

0,0,'2010-01-01 00:00:00',10,10,10,'2012-01-01 00:00:00')a,ST_MakeBox3dt(6,6,3,'2010-01-01 00:00:00',8,8,5,'2013-01-01 00:00:00')b)SELECT b/<@/ aAS OpZ,b#<@# aAS OpT,b<@ aAS Op2D,b</@ aAS Op3D,b<#@ aAS Op2DT,b</#@ aAS Op3DT from...

DATEDIFF

DATEDIFF(datetime2,TIMESTAMP '2017-10-15 23:00:00')as int3,DATEDIFF(datetime2,nullstr)as int4,DATEDIFF(nullstr,TIMESTAMP '2017-10-15 23:00:00')as int5,DATEDIFF(nullstr,datetime2)as int6,DATEDIFF(TIMESTAMP '2017-10-15 23:00...

PARSE_URL

PARSE_URL(url1,'REF')as var5,PARSE_URL(url1,'PROTOCOL')as var6,PARSE_URL(url1,'FILE')as var7,PARSE_URL(url1,'AUTHORITY')as var8,PARSE_URL(nullstr,'QUERY')as var9,PARSE_URL(url1,'USERINFO')as var10,PARSE_URL(nullstr,'QUERY'...

DATE_FORMAT

测试数据 date1(VARCHAR)datetime1(VARCHAR)nullstr(VARCHAR)0915-2017 2017-09-15 00:00:00 NULL 测试语句 SELECT DATE_FORMAT(datetime1,'yyMMdd')as var1,DATE_FORMAT(nullstr,'yyMMdd')as var2,DATE_FORMAT(datetime1,nullstr)as var3,...

全表统计

create table summary_test_input as select*from(select 'a' as col1,1 as col2,0.001 as col3 from dual union all select 'b' as col1,2 as col2,100.01 as col3 from dual)tmp;PAI命令 PAI-name stat_summary-project algo_public-...

共享内存通信（SMC）使用说明

Alibaba Cloud Linux 3提供的共享内存通信SMC（Shared Memory Communication）是一种兼容socket层、使用共享内存技术实现的高性能内核网络协议栈。根据共享内存技术的不同，SMC又可以细分为基于Internal Shared Memory（ISM）技术的SMC ...

共享内存通信（SMC）使用说明

Alibaba Cloud Linux 3提供的共享内存通信SMC（Shared Memory Communication）是一种兼容socket层、使用共享内存技术实现的高性能内核网络协议栈。根据共享内存技术的不同，SMC又可以细分为基于Internal Shared Memory（ISM）技术的SMC ...

Modularity

id,'3' as group_out_id,'4' as flow_in_id,'3' as group_in_id union all select '3' as flow_out_id,'3' as group_out_id,'4' as flow_in_id,'3' as group_in_id union all select '4' as flow_out_id,'3' as group_out_id,'6' as flow_...

H3函数

语法 boolean H3_AreNeighborCells(Long H3Cell1,Long H3Cell2)boolean H3_AreNeighborCells(string H3Cell1,string H3Cell2)参数说明 参数 说明 H3Cell1、H3Cell2 H3网格编码，类型为LONG或STRING。示例 示例一：输入两个LONG格式的H3网格...

H3函数

语法 boolean H3_AreNeighborCells(Long H3Cell1,Long H3Cell2)boolean H3_AreNeighborCells(string H3Cell1,string H3Cell2)参数说明 参数 说明 H3Cell1、H3Cell2 H3网格编码，类型为LONG或STRING。示例 示例一：输入两个LONG格式的H3网格...

WAF日志告警配置案例

4XX比例异常告警 告警参数配置建议：图表名称：4XX比例（忽略拦截数据）查询语句：user_id:您的阿里云账号ID and not real_client_ip:被拦截的请求IP|SELECT user_id,host AS"域名",Rate_2XX AS"2XX比例",Rate_3XX AS"3XX比例",Rate_4XX AS...

WAF日志告警配置案例

4XX比例异常告警 告警参数配置建议：图表名称：4XX比例（忽略拦截数据）查询语句：user_id:您的阿里云账号ID and not real_client_ip:被拦截的请求IP|SELECT user_id,host AS"域名",Rate_2XX AS"2XX比例",Rate_3XX AS"3XX比例",Rate_4XX AS...

性能白皮书（Nexmark性能测试）

reserve BIGINT,dateTime TIMESTAMP(3),expires TIMESTAMP(3),seller BIGINT,category BIGINT,extra VARCHAR>,bid ROW,bidder BIGINT,price BIGINT,channel VARCHAR,url VARCHAR,dateTime TIMESTAMP(3),extra VARCHAR>,dateTime AS CASE ...

SQL语句示例

DATE)-1 AND 省区='四川' AND QUARTER(日期)IN(2,3))AS subquery 同比 当前周期相对于历史同一时间段的数据变化情况 经销商"毛龙"今年第一季度的销售总额同比增长了多少？SELECT(Q1_sales_this_year-Q1_sales_last_year)/Q1_sales_last_...

性能测试指南

MKTSEGMENT AS C_MKTSEGMENT,s.S_NAME AS S_NAME,s.S_ADDRESS AS S_ADDRESS,s.S_CITY AS S_CITY,s.S_NATION AS S_NATION,s.S_REGION AS S_REGION,s.S_PHONE AS S_PHONE,p.P_NAME AS P_NAME,p.P_MFGR AS P_MFGR,p.P_CATEGORY AS P_CATEGORY,...

同比和环比函数

查询和分析结果为分列显示 查询和分析语句（调试）*|SELECT diff[1]AS today,diff[2]AS yesterday,diff[3]AS ratio FROM(SELECT compare(PV,86400)AS diff FROM(SELECT count(*)AS PV FROM log))compare函数计算结果为数组形式，其中 diff ...

卡方拟合性检验

默认所有概率值相等 示例 测试数据 create table pai_chisq_test_input as select*from(select '1' as f0,'2' as f1 from dual union all select '1' as f0,'3' as f1 from dual union all select '1' as f0,'4' as f1 from dual union all...

k-Core

out_id,'3' as flow_in_id union all select '2' as flow_out_id,'4' as flow_in_id union all select '3' as flow_out_id,'4' as flow_in_id union all select '3' as flow_out_id,'5' as flow_in_id union all select '3' as flow_out_id...
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