PPT-Branch Hazards

Consider executing this sequence of instructions in the pipeline address instruction 36 sub 10 4 8 40 beq 1 3 72 44 and 12 2 5. 51 KASTURBA ROAD KASTURBA ROAD BANGALOR KARNATAKA 560001 75 Old Airport Road Bangalore AIRPORT RDBANGALORE GOLDEN TOWER AIRPORT ROAD KODIHALI BANGALOR KARNATAKA 560017 367 Seshadripuram Bangalore MEERA SADANNO 60 1ST MAIN ROAD SESHADRIPURAM BANGALOR Prof. Hakim Weatherspoon. CS 3410, . Spring 2015. Computer Science. Cornell University. See P&H Chapter: . 4.6-4.8. Announcements. Prelim next week. . Tuesday at 7:30. . Go to location based . on . CS 3410. New Instructions (Table B). Jumps - J, JR, JAL, JALR. Branches - BEQ, BNE, BLEZ, BGTZ, BLTZ, BGEZ. Memory - LW, LB, LBU, SW, SB. However, Project 2 . is. cumulative.. Logisim RAM. Load-Use Hazard. CS . 3410, Spring 2014. Computer Science. Cornell University. See P&H Chapter: . 4.6-4.8. Announcements. Prelim next week. . Tuesday at 7:30 . . Upson B17 [a-e]*, . Olin . 255[f-m]*, . Philips . 5. Branch Prediction . (2.3) and . Scoreboarding. (A.7). 2. Why do we want to predict branches?. MIPS based pipeline – 1 instruction issued per cycle, branch hazard of 1 cycle.. Delayed branch. Modern processor and next generation – multiple instructions issued per cycle, more branch hazard cycles will incur.. Situations that prevent starting the next instruction in the next . cycle. Structural hazards. A required resource is busy. Data hazard. Need to wait for previous instruction to complete its data read/write. and Instruction Variations. Hakim Weatherspoon. CS 3410, . Spring 2012. Computer Science. Cornell University. See P&H . Appendix. . 4.8. Goals for Today. Recap: Data Hazards. Control Hazards. What is the next instruction to execute if a branch is taken? Not taken?. Content. The Branch-and-Bound (BB) method.. the framework for almost all commercial software for solving mixed integer linear programs. Cutting-plane (CP) algorithms.. Branch-and-Cut (BC). The most efficient general-purpose algorithms for solving MILPs. Situations that prevent starting the next instruction in the next . cycle. Structural hazards. A required resource is busy. Data hazard. Need to wait for previous instruction to complete its data read/write. An overview of chemical hazards and the associated pictograms. Physical Hazards. OSHA. , Globally Harmonized System of Classification and . Labeling . of Chemicals (GHS). http://www.osha.gov/dsg/hazcom/ghs.html#4.2. address instruction. ----------------------------. 36: sub $10, $4, $8. 40: . beq. $1, $3, 72. 44: and $12, $2, $5. 48: or $13,$. 12,$13. . 52: add $14, $4, $2. cycle. Structural hazards. A required resource is busy. Data hazard. Need to wait for previous instruction to complete its data read/write. Control hazard. Deciding on control action depends on previous instruction. Developed by Western Iowa Tech Community College . This material was produced under a grant (SH-16634-07-60-F-19) from the Occupational Safety and Health Administration, U.S. Department of Labor. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does the mention or trade names, commercial products, or organization imply endorsement by the U.S. government.. Individual labs must train new users on the safe usage of autoclaves.. Before use:. Check that autoclave is clear of any items left from previous use.. Check that door gaskets have not deteriorated. Loading.